List of nuclides

Introduction

There are presently 251 known stable nuclides. Many of these in theory could decay through spontaneous fission, alpha decay, double beta decay, etc. with a very long half-life, but this has not yet been observed. Thus, the number of stable nuclides is subject to change if some of these 251 have radioactive decay observed in the future. In this article, the "stable" nuclides are divided into three tables: one for nuclides that are theoretically stable (meaning no decay mode is possible) except to spontaneous fission, which is not considered plausible in this mass range; one for nuclides that can theoretically undergo forms of decay other than spontaneous fission but have no published lower bound on lifetime from experimental evaluations; and one for nuclides that can theoretically decay and have been examined without detecting any decay, allowing a lower bound to be published. In this last table, where a decay has been predicted theoretically but never observed experimentally (either directly or by finding an excess of the daughter), the theoretical decay mode is given in parentheses, and "* (lifetime in years)*" is shown in the half-life column to show this lower limit in scientific notation. Such nuclides are considered to be "stable", also called "observationally stable" indicating the tentative nature of the conclusion, until some decay has been observed. For example, tellurium-123 was reported to be radioactive, but the same experimental group later retracted this report, and it is again listed as stable.

The next group is the primordial radioactive nuclides. These have been measured to be radioactive, or decay products have been identified in natural samples (tellurium-128, barium-130). There are 35 of these (see these nuclides), of which 25 have half-lives longer than years. For most of these 25, decay is difficult to observe, and for most purposes they can be regarded as effectively stable. Bismuth-209 is notable as it is the only naturally occurring isotope of an element long considered stable. The other 10, platinum-190, samarium-147, lanthanum-138, rubidium-87, rhenium-187, lutetium-176, thorium-232, uranium-238, potassium-40, and uranium-235, have half-lives between and years, which means they have undergone at least 0.5% depletion since the formation of the Solar System about years ago, but still exist on Earth in significant quantities. They are the primary source of radiogenic heating and radioactive decay products. Together, there are a total of 286 primordial nuclides.

The list then covers the other radionuclides with half-lives longer than 1 hour, split into several tables in order of successively shorter lifetimes.

Some nuclides that have half-lives too short to be primordial can be detected in nature as a result of later production by natural processes, mostly in trace amounts. These include radionuclides occurring in the decay chains of primordial uranium and thorium (radiogenic nuclides), such as radon-222. Others are the products of interactions with energetic cosmic rays (the cosmogenic nuclides), such as carbon-14. This gives a total of about 350 naturally occurring nuclides, some of which are difficult to detect. Other nuclides may be occasionally produced naturally by rare cosmogenic interactions or as a result of other natural nuclear reactions (nucleogenic nuclides), and these are generally even less detectable.

Non-primordial nuclides may also be detected in the spectra of stars; technetium is well established, and others have been claimed. The remaining nuclides are known solely from artificial nuclear transmutations. Some, such as caesium-137 and krypton-85, are detected in the environment, but only (or practically only) from deliberate or accidental release of artificial production, as fission products (from nuclear weapons or nuclear reactors), for industrial or medical uses, or otherwise.

List legend

Each group of radionuclides, starting with the longest-lived primordial radionuclides, is sorted by decreasing half-life, but the tables are sortable by other columns. All columns sort by usual lexicographical order; in the case of the nuclide column this gives order on the mass number A.

:{| class="wikitable" |- | α

;CG: Cosmogenic nuclide. ;DP: Naturally occurring decay product (of thorium-232, uranium-238, or uranium-235), including products of neutron reactions other than fission. ;ESS: Present in the early Solar System (first few million years), but extinct now as a primordial nuclide. Inherently overlaps with cosmogenic nuclides. ;FP: Nuclear fission product , may occur naturally from spontaneous fission. ;IM: Industry or medically used radionuclide.}}

Of the 701 non-primordial nuclides in the tables below, 101 have the label FP (99 true fission products), 65 IM, 32 DP, 24 CG, 13 ESS, and 7 both CG and ESS.

Full list

The tables are based now on the standard reference NUBASE2020 and its companion, based on the same data, AME2020. All observational data not otherwise cited should be found in those sources, or calculated from them, and only observed data, not theoretical extrapolations, should be present in these tables.

Theoretically stable nuclides

Main article: Stable nuclide

These are the theoretically stable nuclides, ordered by "energy".

! No. !! Nuclide !! A !! Z !! N !! Energy (MeV) |- ||_row_count||56Fe||56||26||30|| |- ||_row_count||62Ni||62||28||34|| |- ||_row_count||60Ni||60||28||32|| |- ||_row_count||58Fe||58||26||32|| |- ||_row_count||52Cr||52||24||28|| |- ||_row_count||57Fe||57||26||31|| |- ||_row_count||59Co||59||27||32|| |- ||_row_count||54Cr||54||24||30|| |- ||_row_count||61Ni||61||28||33|| |- ||_row_count||55Mn||55||25||30|| |- ||_row_count||64Ni||64||28||36|| |- ||_row_count||66Zn||66||30||36|| |- ||_row_count||53Cr||53||24||29|| |- ||_row_count||63Cu||63||29||34|| |- ||_row_count||65Cu||65||29||36|| |- ||_row_count||68Zn||68||30||38|| |- ||_row_count||50Ti||50||22||28|| |- ||_row_count||51V||51||23||28|| |- ||_row_count||67Zn||67||30||37|| |- ||_row_count||48Ti||48||22||26|| |- ||_row_count||72Ge||72||32||40|| |- ||_row_count||70Ge||70||32||38|| |- ||_row_count||69Ga||69||31||38|| |- ||_row_count||88Sr||88||38||50|| |- ||_row_count||74Ge||74||32||42|| |- ||_row_count||49Ti||49||22||27|| |- ||_row_count||76Se||76||34||42|| |- ||_row_count||71Ga||71||31||40|| |- ||_row_count||78Se||78||34||44|| |- ||_row_count||90Zr||90||40||50|| |- ||_row_count||89Y||89||39||50|| |- ||_row_count||86Sr||86||38||48|| |- ||_row_count||82Kr||82||36||46|| |- ||_row_count||84Kr||84||36||48|| |- ||_row_count||73Ge||73||32||41|| |- ||_row_count||87Sr||87||38||49|| |- ||_row_count||75As||75||33||42|| |- ||_row_count||80Kr||80||36||44|| |- ||_row_count||77Se||77||34||43|| |- ||_row_count||85Rb||85||37||48|| |- ||_row_count||91Zr||91||40||51|| |- ||_row_count||83Kr||83||36||47|| |- ||_row_count||79Br||79||35||44|| |- ||_row_count||81Br||81||35||46|| |- ||_row_count||92Zr||92||40||52|| |- ||_row_count||46Ti||46||22||24|| |- ||_row_count||47Ti||47||22||25|| |- ||_row_count||44Ca||44||20||24|| |- ||_row_count||94Mo||94||42||52|| |- ||_row_count||93Nb||93||41||52|| |- ||_row_count||96Mo||96||42||54|| |- ||_row_count||95Mo||95||42||53|| |- ||_row_count||42Ca||42||20||22|| |- ||_row_count||38Ar||38||18||20|| |- ||_row_count||45Sc||45||21||24|| |- ||_row_count||97Mo||97||42||55|| |- ||_row_count||98Ru||98||44||54|| |- ||_row_count||43Ca||43||20||23|| |- ||_row_count||100Ru||100||44||56|| |- ||_row_count||99Ru||99||44||55|| |- ||_row_count||34S||34||16||18|| |- ||_row_count||40Ar||40||18||22|| |- ||_row_count||102Ru||102||44||58|| |- ||_row_count||101Ru||101||44||57|| |- ||_row_count||41K||41||19||22|| |- ||_row_count||39K||39||19||20|| |- ||_row_count||104Pd||104||46||58|| |- ||_row_count||37Cl||37||17||20|| |- ||_row_count||103Rh||103||45||58|| |- ||_row_count||36S||36||16||20|| |- ||_row_count||106Pd||106||46||60|| |- ||_row_count||105Pd||105||46||59|| |- ||_row_count||35Cl||35||17||18|| |- ||_row_count||108Pd||108||46||62|| |- ||_row_count||107Ag||107||47||60|| |- ||_row_count||110Cd||110||48||62|| |- ||_row_count||30Si||30||14||16|| |- ||_row_count||109Ag||109||47||62|| |- ||_row_count||32S||32||16||16|| |- ||_row_count||33S||33||16||17|| |- ||_row_count||31P||31||15||16|| |- ||_row_count||28Si||28||14||14|| |- ||_row_count||29Si||29||14||15|| |- ||_row_count||112Cd||112||48||64|| |- ||_row_count||111Cd||111||48||63|| |- ||_row_count||114Sn||114||50||64|| |- ||_row_count||113In||113||49||64|| |- ||_row_count||116Sn||116||50||66|| |- ||_row_count||115Sn||115||50||65|| |- ||_row_count||118Sn||118||50||68|| |- ||_row_count||117Sn||117||50||67|| |- ||_row_count||120Sn||120||50||70|| |- ||_row_count||119Sn||119||50||69|| |- ||_row_count||121Sb||121||51||70|| |- ||_row_count||122Te||122||52||70|| |- ||_row_count||124Te||124||52||72|| |- ||_row_count||123Sb||123||51||72|| |- ||_row_count||126Te||126||52||74|| |- ||_row_count||125Te||125||52||73|| |- ||_row_count||128Xe||128||54||74|| |- ||_row_count||127I||127||53||74|| |- ||_row_count||130Xe||130||54||76|| |- ||_row_count||129Xe||129||54||75|| |- ||_row_count||132Xe||132||54||78|| |- ||_row_count||131Xe||131||54||77|| |- ||_row_count||134Ba||134||56||78|| |- ||_row_count||133Cs||133||55||78|| |- ||_row_count||136Ba||136||56||80|| |- ||_row_count||135Ba||135||56||79|| |- ||_row_count||137Ba||137||56||81|| |- ||_row_count||138Ba||138||56||82|| |- ||_row_count||27Al||27||13||14|| |- ||_row_count||140Ce||140||58||82|| |- ||_row_count||139La||139||57||82|| |- ||_row_count||26Mg||26||12||14|| |- ||_row_count||141Pr||141||59||82|| |- ||_row_count||142Nd||142||60||82|| |- ||_row_count||24Mg||24||12||12|| |- ||_row_count||25Mg||25||12||13|| |- ||_row_count||156Gd||156||64||92|| |- ||_row_count||157Gd||157||64||93|| |- ||_row_count||158Gd||158||64||94|| |- ||_row_count||159Tb||159||65||94|| |- ||_row_count||23Na||23||11||12|| |- ||_row_count||163Dy||163||66||97|| |- ||_row_count||164Dy||164||66||98|| |- ||_row_count||22Ne||22||10||12|| |- ||_row_count||20Ne||20||10||10|| |- ||_row_count||16O||16||8||8|| |- ||_row_count||21Ne||21||10||11|| |- ||_row_count||19F||19||9||10|| |- ||_row_count||17O||17||8||9|| |- ||_row_count||18O||18||8||10|| |- ||_row_count||12C||12||6||6|| |- ||_row_count||15N||15||7||8|| |- ||_row_count||14N||14||7||7|| |- ||_row_count||13C||13||6||7|| |- ||_row_count||4He||4||2||2|| |- ||_row_count||11B||11||5||6|| |- ||_row_count||10B||10||5||5|| |- ||_row_count||9Be||9||4||5|| |- ||_row_count||7Li||7||3||4|| |- ||_row_count||6Li||6||3||3|| |- ||_row_count||3He||3||2||1|| |- ||_row_count||2H||2||1||1|| |- ||_row_count||1H||1||1||0|| |}

Observationally stable nuclides having theoretical decay modes other than spontaneous fission (no lower bounds)

Ordered by "energy".

! No. !! Nuclide !! A !! Z !! N !! Energy !! Decay mode !! Decay energy (MeV) |- ||_row_count||80Se|| 80||34|| 46||||aligncenter| ||aligncenter|0.134 |- ||_row_count||86Kr|| 86||36|| 50||||aligncenter| ||aligncenter|1.257 |- ||_row_count||84Sr|| 84||38|| 46||||aligncenter| ||aligncenter|1.790 |- ||_row_count||102Pd||102||46|| 56||||aligncenter| ||aligncenter|1.203 |- ||_row_count||36Ar|| 36||18|| 18||||aligncenter| ||aligncenter|0.433 |- ||_row_count||122Sn||122||50|| 72||||aligncenter| ||aligncenter|0.373 |- ||_row_count||150Sm||150||62|| 88||||aligncenter| ||aligncenter|1.450 |- ||_row_count||152Sm||152||62|| 90||||aligncenter| ||aligncenter|0.220 |- ||_row_count||154Gd||154||64|| 90||||aligncenter| ||aligncenter|0.920 |- ||_row_count||155Gd||155||64|| 91||||aligncenter| ||aligncenter|0.081 |- ||_row_count||164Er||164||68|| 96||||aligncenter| ||aligncenter|0.025, 1.305 |- ||_row_count||165Ho||165||67|| 98||||aligncenter| ||aligncenter|0.139 |- ||_row_count||166Er||166||68|| 98||||aligncenter| ||aligncenter|0.832 |- ||_row_count||167Er||167||68|| 99||||aligncenter| ||aligncenter|0.667 |- ||_row_count||168Er||168||68||100||||aligncenter| ||aligncenter|0.553 |- ||_row_count||169Tm||169||69||100||||aligncenter| ||aligncenter|1.198 |- ||_row_count||170Yb||170||70||100||||aligncenter| ||aligncenter|1.735 |- ||_row_count||171Yb||171||70||101||||aligncenter| ||aligncenter|1.558 |- ||_row_count||172Yb||172||70||102||||aligncenter| ||aligncenter|1.309 |- ||_row_count||173Yb||173||70||103||||aligncenter| ||aligncenter|0.945 |- ||_row_count||174Yb||174||70||104||||aligncenter| ||aligncenter|0.738 |- ||_row_count||175Lu||175||71||104||||aligncenter| ||aligncenter|1.620 |- ||_row_count||181Ta||181||73||108||||aligncenter| ||aligncenter|1.520 |- ||_row_count||185Re||185||75||110||||aligncenter| ||aligncenter|2.195 |- ||_row_count||191Ir||191||77||114||||aligncenter| ||aligncenter|2.083 |- ||_row_count||194Pt||194||78||116||||aligncenter| ||aligncenter|1.523 |- ||_row_count||193Ir||193||77||116||||aligncenter| ||aligncenter|1.018 |- ||_row_count||195Pt||195||78||117||||aligncenter| ||aligncenter|1.176 |- ||_row_count||196Pt||196||78||118||||aligncenter| ||aligncenter|0.813 |- ||_row_count||197Au||197||79||118||||aligncenter| ||aligncenter|0.972 |- ||_row_count||198Hg||198||80||118||||aligncenter| ||aligncenter|1.381 |- ||_row_count||199Hg||199||80||119||||aligncenter| ||aligncenter|0.823 |- ||_row_count||200Hg||200||80||120||||aligncenter| ||aligncenter|0.716 |- ||_row_count||201Hg||201||80||121||||aligncenter| ||aligncenter|0.332 |- ||_row_count||202Hg||202||80||122||||aligncenter| ||aligncenter|0.134 |- ||_row_count||203Tl||203||81||122||||aligncenter| ||aligncenter|0.908 |- ||_row_count||204Hg||204||80||124||||aligncenter| ||aligncenter|0.420 |- ||_row_count||205Tl||205||81||124||||aligncenter| ||aligncenter|0.155 |}

Observationally stable nuclides having theoretical decay modes other than spontaneous fission, for which those decays have experimental lower bounds

Ordered by the given lower bound on half-life. These should not be considered authoritative without consulting the original source (footnote, or if none, that given in ) as exactly what was measured and how are not reflected here, and some of the values may be misinterpretations. Further, in all cases, this is not an indicator of the probable half-life, which may be much longer (especially for alpha decay), but only the experiment's ability to measure it.

! No. !! Nuclide !! A !! Z !! N !! Energy !! Half-life (seconds) !! Half-life (years) !! Decay mode !! Decay energy (MeV) |- ||_row_count||134Xe||134||54|| 80|||| || ||aligncenter|(β−β−) ||aligncenter|0.824 |- ||_row_count||40Ca|| 40||20|| 20|||| || ||aligncenter|(β+β+) ||aligncenter|0.193 |- ||_row_count||184W||184||74||110|||| || ||aligncenter|(α) ||aligncenter|1.649 |- ||_row_count||182W||182||74||108|||| || ||aligncenter|(α) ||aligncenter|1.764 |- ||_row_count||208Pb||208||82||126|||| || ||aligncenter|(α) ||aligncenter|0.517 |- ||_row_count||206Pb||206||82||124|||| || ||aligncenter|(α) ||aligncenter|1.135 |- ||_row_count||126Xe||126||54|| 72|||| || ||aligncenter|(β+β+)||aligncenter|0.918 |- ||_row_count||207Pb||207||82||125|||| || ||aligncenter|(α) ||aligncenter|0.392 |- ||_row_count||120Te||120||52|| 68|||| || ||aligncenter|(β+β+) ||aligncenter|1.736 |- ||_row_count||106Cd||106||48|| 58|||| || ||aligncenter|(β+β+) ||aligncenter|2.775 |- ||_row_count||58Ni|| 58||28|| 30|||| || ||aligncenter|(β+β+) ||aligncenter|1.926 |- ||_row_count||183W||183||74||109|||| || ||aligncenter|(α) ||aligncenter|1.672 |- ||_row_count||104Ru||104||44|| 60|| || || ||aligncenter|(β−β−)||aligncenter|1.299 |- ||_row_count||54Fe|| 54||26|| 28|||| || ||aligncenter|(β+β+) ||aligncenter|0.681 |- ||_row_count||132Ba||132||56|| 76|||| || ||aligncenter|(β+β+) ||aligncenter|0.844 |- ||_row_count||110Pd||110||46|| 64|||| || ||aligncenter|(β−β−) ||aligncenter|2.017 |- ||_row_count||92Mo|| 92||42|| 50|||| || ||aligncenter|(β+β+) ||aligncenter|1.650 |- ||_row_count||204Pb||204||82||122|||| || ||aligncenter|(α) ||aligncenter|1.969 |- ||_row_count||112Sn||112||50|| 62|||| || ||aligncenter|(β+β+) ||aligncenter|1.920 |- ||_row_count||96Ru|| 96||44|| 52|||| || ||aligncenter|(β+β+) ||aligncenter|2.715 |- ||_row_count||192Os||192||76||116|||| || ||aligncenter|(β−β−, α) ||aligncenter|0.406, 0.361 |- ||_row_count||198Pt||198||78||120|||| || ||aligncenter|(β−β−, α) ||aligncenter|1.050, 0.106 |- ||_row_count||160Gd||160||64|| 96|||| || ||aligncenter|(β−β−) ||aligncenter|1.730 |- ||_row_count||186W||186||74||112|||| || ||aligncenter|(β−β−, α) ||aligncenter|0.491, 1.116 |- ||_row_count||144Sm||144||62|| 82|||| || ||aligncenter|(β+β+)||aligncenter|1.782 |- ||_row_count||190Os||190||76||114|||| || ||aligncenter|(α) ||aligncenter|1.376 |- ||_row_count||64Zn|| 64||30|| 34|||| || ||aligncenter|(β+β+) ||aligncenter|1.095 |- ||_row_count||74Se|| 74||34|| 40|||| || ||aligncenter|(β+β+)||aligncenter|1.209 |- ||_row_count||70Zn|| 70||30|| 40|||| || ||aligncenter|(β−β−) ||aligncenter|0.997 |- ||_row_count||188Os||188||76||112|||| || ||aligncenter|(α) ||aligncenter|2.143 |- ||_row_count||143Nd||143||60|| 83|||| || ||aligncenter|(α) ||aligncenter|0.530 |- ||_row_count||148Nd||148||60|| 88|||| || ||aligncenter|(β−β−, α) ||aligncenter|1.928, 0.599 |- ||_row_count||142Ce||142||58|| 84|||| || ||aligncenter|(β−β−, α) ||aligncenter|1.417, 1.304 |- ||_row_count||179Hf||179||72||107|||| || ||aligncenter|(α) ||aligncenter|1.808 |- ||_row_count||196Hg||196||80||116|||| || ||aligncenter|(β+β+, α) ||aligncenter|0.819, 2.038 |- ||_row_count||154Sm||154||62|| 92|||| || ||aligncenter|(β−β−) ||aligncenter|1.251 |- ||_row_count||146Nd||146||60|| 86|||| || ||aligncenter|(β−β−, α) ||aligncenter|0.070, 1.182 |- ||_row_count||50Cr|| 50||24|| 26|||| || ||aligncenter|(β+β+) ||aligncenter|1.171 |- ||_row_count||178Hf||178||72||106|||| || ||aligncenter|(α) ||aligncenter|2.084 |- ||_row_count||177Hf||177||72||105|||| || ||aligncenter|(α) ||aligncenter|2.246 |- ||_row_count||156Dy||156||66|| 90|||| || ||aligncenter|(β+β+, α) ||aligncenter|2.006, 1.753 |- ||_row_count||153Eu||153||63|| 90|||| || ||aligncenter|(α)||aligncenter|0.272 |- ||_row_count||180Hf||180||72||108|||| || ||aligncenter|(α)||aligncenter|1.287 |- ||_row_count||108Cd||108||48|| 60|||| || ||aligncenter|(β+β+) ||aligncenter|0.272 |- ||_row_count||170Er||170||68||102|||| || ||aligncenter|(β−β−, α) ||aligncenter|0.656, 0.052 |- ||_row_count||138Ce||138||58|| 80|||| || ||aligncenter|(β+β+) ||aligncenter|0.696 |- ||_row_count||180mTa||180||73||107|||| || ||aligncenter|(β−, ε, IT, α) ||aligncenter|0.778, 0.921, 0.075, 2.099 |- ||_row_count||176Hf||176||72||104|||| || ||aligncenter|(α) ||aligncenter|2.254 |- ||_row_count||46Ca|| 46||20|| 26|||| || ||aligncenter|(β−β−) ||aligncenter|0.987 |- ||_row_count||176Yb||176||70||106|||| || ||aligncenter|(β−β−, α) ||aligncenter|1.085, 0.567 |- ||_row_count||94Zr|| 94||40|| 54|||| || ||aligncenter|(β−β−) ||aligncenter|1.145 |- ||_row_count||124Sn||124||50|| 74|||| || ||aligncenter|(β−β−) ||aligncenter|2.293 |- ||_row_count||162Dy||162||66|| 96|||| || ||aligncenter|(α) ||aligncenter|0.084 |- ||_row_count||136Ce||136||58|| 78|||| || ||aligncenter|(β+β+) ||aligncenter|2.379 |- ||_row_count||114Cd||114||48|| 66|||| || ||aligncenter|(β−β−) ||aligncenter|0.545 |- ||_row_count||123Te||123||52|| 71|||| || ||aligncenter|(ε) ||aligncenter|0.052 |- ||_row_count||145Nd||145||60|| 85|||| || ||aligncenter|(α) ||aligncenter|1.574 |- ||_row_count||192Pt||192||78||114|||| || ||aligncenter|(α) ||aligncenter|2.424 |- ||_row_count||161Dy||161||66|| 95|||| || ||aligncenter|(α) ||aligncenter|0.343 |- ||_row_count||160Dy||160||66|| 94|||| || ||aligncenter|(α) ||aligncenter|0.438 |- ||_row_count||189Os||189||76||113|||| || ||aligncenter|(α)||aligncenter|1.976 |- ||_row_count||187Os||187||76||111|||| || ||aligncenter|(α) ||aligncenter|2.722 |- ||_row_count||149Sm||149||62|| 87|||| || ||aligncenter|(α) ||aligncenter|1.871 |- ||_row_count||158Dy||158||66|| 92|||| || ||aligncenter|(β+β+, α) ||aligncenter|0.283, 0.874 |- ||_row_count||162Er||162||68|| 94|||| || ||aligncenter|(β+β+, α) ||aligncenter|1.847, 1.648 |- ||_row_count||168Yb||168||70|| 98|||| || ||aligncenter|(β+β+, α) ||aligncenter|1.409, 1.938 |- ||_row_count||98Mo|| 98||42|| 56|||| || ||aligncenter|(β−β−) ||aligncenter|0.109 |}

Primordial radioactive nuclides (half-life > 10⁸ years)

Main article: Primordial nuclide

Ordered by half-life.

! No. !! Nuclide !! A !! Z !! N !! Energy !! Half-life (seconds) !! Half-life (years) !! Decay mode !! Decay energy (MeV) |- ||_row_count||128Te|| 128 || 52 || 76||||||||aligncenter|β−β− ||aligncenter|0.867 |- ||_row_count||124Xe|| 124 || 54 || 70||||||||aligncenter|εε ||aligncenter|2.857 |- ||_row_count||78Kr|| 78 || 36 || 42||||||||aligncenter|εε ||aligncenter|2.848 |- ||_row_count||136Xe|| 136 || 54 || 82||||||||aligncenter|β−β− ||aligncenter|2.458 |- ||_row_count||76Ge|| 76 || 32 || 44||||||||aligncenter|β−β− ||aligncenter|2.039 |- ||_row_count||130Ba|| 130 || 56 || 74|||| ||||aligncenter|εε ||aligncenter|2.624 |- ||_row_count||130Te|| 130 || 52 || 78||||||||aligncenter|β−β− ||aligncenter|2.528 |- ||_row_count||82Se|| 82 || 34 || 48||||||||aligncenter|β−β− ||aligncenter|2.998 |- ||_row_count||48Ca|| 48 || 20 || 28||||||||aligncenter|β−β−−--||aligncenter|4.268 |- ||_row_count||116Cd|| 116 || 48 || 68||||||||aligncenter|β−β− ||aligncenter|2.813 |- ||_row_count||209Bi|| 209 || 83 || 126||||||||aligncenter|α ||aligncenter|3.137 |- ||_row_count||96Zr|| 96 || 40 || 56||||||||aligncenter|β−β−−--||aligncenter|3.356 |- ||_row_count||150Nd|| 150 || 60 || 90||||||||aligncenter|β−β− ||aligncenter|3.371 |- ||_row_count||100Mo|| 100 || 42 || 58||||||||aligncenter|β−β− ||aligncenter|3.034 |- ||_row_count||151Eu|| 151 || 63 || 88||||||||aligncenter|α ||aligncenter|1.964 |- ||_row_count||180W|| 180 || 74 || 106||||||||aligncenter|α ||aligncenter|2.515 |- ||_row_count||50V|| 50 || 23 || 27||||||||aligncenter|β+−--Also theoretically capable of β− decay ||aligncenter|2.209 |- ||_row_count||174Hf|| 174 || 72 || 102||||||||aligncenter|α ||aligncenter|2.494 |- ||_row_count||113Cd|| 113 || 48 || 65||||||||aligncenter|β− ||aligncenter|0.324 |- ||_row_count||148Sm|| 148 || 62 || 86||||||||aligncenter|α ||aligncenter|1.987 |- ||_row_count||144Nd|| 144 || 60 || 84||||||||aligncenter|α ||aligncenter|1.901 |- ||_row_count||186Os|| 186 || 76 || 110||||||||aligncenter|α ||aligncenter|2.821 |- ||_row_count||115In|| 115 || 49 || 66||||||||aligncenter|β− ||aligncenter|0.497 |- ||_row_count||152Gd|| 152 || 64 || 88||||||||aligncenter|α ||aligncenter|2.204 |- ||_row_count||184Os|| 184 || 76 || 108||||||||aligncenter|α ||aligncenter|2.959 |- ||_row_count||190Pt|| 190 || 78 || 112||||||||aligncenter|α ||aligncenter|3.269 |- ||_row_count||147Sm|| 147 || 62 || 85||||||||aligncenter|α ||aligncenter|2.311 |- ||_row_count||138La|| 138 || 57 || 81||||||||aligncenter|β+ (65), β− (35)||aligncenter|1.748, 1.053 |- ||_row_count||87Rb|| 87 || 37 || 50||||||||aligncenter|β− ||aligncenter|0.282 |- ||_row_count||187Re|| 187 || 75 || 112||||||||aligncenter|β− ||aligncenter|0.0026 |- ||_row_count||176Lu|| 176 || 71 || 105||||||||aligncenter|β− ||aligncenter|1.194 |- ||_row_count||232Th|| 232 || 90 || 142||||||||aligncenter|α, SF−β−--||aligncenter|4.083 |- ||_row_count||238U|| 238 || 92 || 146||||||||aligncenter|α, SF, β−β−||aligncenter|4.270, 1.145 |- ||_row_count||40K|| 40 || 19 || 21||||||||aligncenter|β− (89), β+ (11)||aligncenter|1.311, 1.504 |- ||_row_count||235U|| 235 || 92 || 143||||||||aligncenter|α, SF ||aligncenter|4.679 |}

Radionuclides with half-lives of 10⁴ years to 10⁸ years

Ordered by half-life. Some of these are known to have been present in the early Solar System (marked "ESS", meaning the first few million years of the Solar System's history) from an excess of their decay products.

! No. !! Nuclide !! Z !! N !! Energy !! Half-life (seconds) !! Half-life (years) !! Decay mode !! Notes |- ||_row_count||146Sm|| 62 || 84||||||||aligncenter|α ||aligncenter| ESS |- ||_row_count||244Pu|| 94 || 150||||||||aligncenter|α, SF (0.12) ||aligncenter|interstellar, ESS |- ||_row_count||92Nb|| 41 || 51|||||| ||aligncenter| β+ || aligncenter|CG, ESS |- ||_row_count||236U|| 92 || 144|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||205Pb|| 82 || 123|||||| ||aligncenter|β+||aligncenter|ESS |- ||_row_count||129I|| 53 || 76|||||| ||aligncenter|β−|| aligncenter|CG, FP, ESS |- ||_row_count||247Cm|| 96 || 151|||||| ||aligncenter|α||aligncenter|ESS |- ||_row_count||182Hf|| 72 || 110|||||| ||aligncenter|β−||aligncenter|ESS |- ||_row_count||107Pd|| 46 || 61|||||| ||aligncenter|β−||aligncenter|FP, ESS |- ||_row_count||97Tc|| 43 || 54|||||| ||aligncenter|β+|| |- ||_row_count||98Tc|| 43 || 55|||||| ||aligncenter|β−|| |- ||_row_count||53Mn|| 25 || 28|||||| ||aligncenter|β+||aligncenter|CG, ESS |- ||_row_count||210mBi|| 83 || 127|||||| ||aligncenter|α|| |- ||_row_count||60Fe|| 26 || 34|||||| ||aligncenter|β−||aligncenter|CG, interstellar, ESS |- ||_row_count||237Np|| 93 || 144|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||150Gd|| 64 || 86|||||| ||aligncenter|α|| |- ||_row_count||93Zr|| 40 || 53|||||| ||aligncenter|β−||aligncenter|FP |- ||_row_count||154Dy|| 66 || 88|||||| ||aligncenter|α|| |- ||_row_count||10Be|| 4 || 6|||||| ||aligncenter|β−||aligncenter|CG, ESS |- ||_row_count||135Cs|| 55 || 80|||||| ||aligncenter|β−||aligncenter|FP |- ||_row_count||26Al|| 13 || 13|||||| ||aligncenter|β+||aligncenter|CG, ESS |- ||_row_count||242Pu|| 94 || 148|||||| ||aligncenter|α, SF|| |- ||_row_count||208Bi|| 83 || 125|||||| ||aligncenter|β+|| |- ||_row_count||248Cm|| 96 || 152|||||| ||aligncenter|α (92), SF (8.4)|| |- ||_row_count||79Se|| 34 || 45|||||| ||aligncenter|β−||aligncenter|FP |- ||_row_count||36Cl|| 17 || 19|||||| ||aligncenter|β− (98), β+ (1.9)||aligncenter|CG, IM |- ||_row_count||234U|| 92 || 142|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||126Sn|| 50 || 76|||||| ||aligncenter|β−||aligncenter|FP |- ||_row_count||81Kr|| 36 || 45|||||| ||aligncenter|β+||aligncenter|CG |- ||_row_count||99Tc|| 43 || 56|||||| ||aligncenter|β−||aligncenter|FP |- ||_row_count||186mRe|| 75 || 111|||||| ||aligncenter|IT|| |- ||_row_count||233U|| 92 || 141|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||236Np|| 93 || 143|||||| ||aligncenter|β+ (86), β− (14), α (0.16)|| |- ||_row_count||41Ca|| 20 || 21|||||| ||aligncenter|β+||aligncenter|CG, ESS |- ||_row_count||59Ni|| 28 || 31|||||| ||aligncenter|β+|| |- ||_row_count||230Th|| 90 || 140|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||137La|| 57 || 80|||||| ||aligncenter|β+|| |- ||_row_count||202Pb|| 82 || 120|||||| ||aligncenter|β+|| |- ||_row_count||231Pa|| 91 || 140|||||| ||aligncenter|α, SF||aligncenter|DP |- ||_row_count||239Pu|| 94 || 145|||||| ||aligncenter|α, SF||aligncenter|DP, IM |- ||_row_count||94Nb|| 41 || 53|||||| ||aligncenter|β−||aligncenter|CG |}

Radionuclides with half-lives of 10 years to 10⁴ years

Ordered by half-life.

! No. !! Nuclide !! Z !! N !! Energy !! Half-life (seconds) !! Half-life (years) !! Decay mode !! Notes |- ||_row_count||250Cm|| 96 || 154||||||8300 ||aligncenter|SF, α, β−|| |- ||_row_count||245Cm|| 96 || 149||||||8250 ||aligncenter|α, SF|| |- ||_row_count||229Th|| 90 || 139||||||7920 ||aligncenter|α||aligncenter|DP |- ||_row_count||243Am|| 95 || 148||||||7350 ||aligncenter|α, SF|| |- ||_row_count||240Pu|| 94 || 146||||||6561 ||aligncenter|α, SF||aligncenter| |- ||_row_count||14C|| 6 || 8||||||5700 ||aligncenter|β−||aligncenter|CG, IM |- ||_row_count||93Mo|| 42 || 51||||||4839||aligncenter|β+|| |- ||_row_count||246Cm|| 96 || 150||||||4700 ||aligncenter|α, SF|| |- ||_row_count||163Ho|| 67 || 96||||||4570 ||aligncenter|β+|| |- ||_row_count||226Ra|| 88 || 138||||||1600 ||aligncenter|α||aligncenter|DP |- ||_row_count||247Bk|| 97 || 150||||||1380 ||aligncenter|α, SF|| |- ||_row_count||166mHo|| 67 || 99 ||||||1133 ||aligncenter|β−|| |- ||_row_count||251Cf|| 98 || 153||||||900 ||aligncenter|α, SF|| |- ||_row_count||91Nb|| 41 || 50||||||680 ||aligncenter|β+|| |- ||_row_count||194Hg|| 80 || 114||||||450 ||aligncenter|β+|| |- ||_row_count||108mAg|| 47 || 61||||||439 ||aligncenter|β+ (91), IT (8.7)|| |- ||_row_count||241Am|| 95 || 146||||||432.6 ||aligncenter|α, SF||aligncenter|IM |- ||_row_count||249Cf|| 98 || 151||||||351 ||aligncenter|α, SF|| |- ||_row_count||39Ar|| 18 || 21||||||268Nubase value. However, a recent direct study: found 302 years, a statistically significant discrepancy to be explained. ||aligncenter|β−||aligncenter|CG |- ||_row_count||192m2Ir|| 77 || 115||||||241 ||aligncenter|IT|| |- ||_row_count||158Tb|| 65 || 93||||||180 ||aligncenter|β+ (83), β− (17)|| |- ||_row_count||32Si|| 14 || 18||||||157 ||aligncenter|β−||aligncenter|CG |- ||_row_count||242mAm|| 95 ||147 ||||||141 ||aligncenter|IT, α (0.46), SF|| |- ||_row_count||209Po|| 84 || 125||||||124 ||aligncenter|α, β+ (0.45)|| |- ||_row_count||63Ni|| 28 || 35||||||101 ||aligncenter|β−||aligncenter|IM |- ||_row_count||151Sm|| 62 || 89||||||94.6 ||aligncenter|β−||aligncenter|FP |- ||_row_count||238Pu|| 94 || 144||||||87.7 ||aligncenter|α, SF||aligncenter|DP, IM |- ||_row_count||148Gd|| 64 || 84||||||86.9 ||aligncenter|α|| |- ||_row_count||157Tb|| 65 || 92||||||71 ||aligncenter|β+|| |- ||_row_count||232U|| 92 || 140||||||68.9 ||aligncenter|α, SF||aligncenter| |- ||_row_count||44Ti|| 22 || 22||||||59.1 ||aligncenter|β+|| |- ||_row_count||193Pt|| 78 || 115||||||50 ||aligncenter|β+|| |- ||_row_count||121mSn|| 50 || 71||||||43.9 ||aligncenter|IT (78), β− (22)||aligncenter|FP |- ||_row_count||150Eu|| 63 || 87||||||36.9 ||aligncenter|β+|| |- ||_row_count||42Ar|| 18 || 24||||||32.9 ||aligncenter|β−|| |- ||_row_count||207Bi|| 83 || 124||||||31.22 ||aligncenter|β+|| |- ||_row_count||178m2Hf|| 72 || 106||||||31 ||aligncenter|IT|| |- ||_row_count||137Cs|| 55 || 82||||||30.04 ||aligncenter|β−||aligncenter|FP, IM |- ||_row_count||243Cm|| 96 || 147||||||29.1 ||aligncenter|α, β+ (0.3), SF|| |- ||_row_count||90Sr|| 38 || 52||||||28.91 ||aligncenter|β−||aligncenter|FP, IM |- ||_row_count||210Pb|| 82 || 128||||||22.2 ||aligncenter|β−, α||aligncenter|DP, IM |- ||_row_count||227Ac|| 89 || 138||||||21.772 ||aligncenter|β− (99), α (1.4)||aligncenter|DP |- ||_row_count||244Cm|| 96 || 148||||||18.11 ||aligncenter|α, SF|| |- ||_row_count||145Pm|| 61 || 84||||||17.7 ||aligncenter|β+, α|| |- ||_row_count||93mNb|| 41 || 52||||||16.1 ||aligncenter|IT ||aligncenter|FP |- ||_row_count||241Pu|| 94 || 147||||||14.33 ||aligncenter|β−, α, SF|| |- ||_row_count||113mCd|| 48 || 65||||||13.9 ||aligncenter|β−, IT (0.10)||aligncenter|FP |- ||_row_count||152Eu|| 63 || 89||||||13.517 ||aligncenter|β+ (72), β− (28)|| |- ||_row_count||250Cf|| 98 || 152||||||13.08 ||aligncenter|α, SF (0.08)|| |- ||_row_count||3H|| 1 || 2||||||12.32 ||aligncenter|β−||aligncenter|CG, IM |- ||_row_count||85Kr|| 36 || 49||||||10.728 ||aligncenter|β−||aligncenter|FP, IM |- ||_row_count||133Ba|| 56 || 77||||||10.538 ||aligncenter|β+|| |}

Radionuclide with unknown half-life

No decay has been observed, but not primordial so does not qualify as "observationally stable".

Radionuclides with half-lives of 1 day to 10 years

Ordered by half-life. The second half-life column in this table has been made unsortable, as the mixture of days and years will not sort properly. Resorting by half-life may be done no less by using the number or the half-life in seconds columns.

! No. !! Nuclide !! Z !! N !! Energy !! Half-life (seconds) !! class"unsortable"|Half-life !! Decay mode !! Notes |- ||_row_count||154Eu|| 63 || 91||||||8.592 y ||aligncenter|β−, β+||aligncenter|FP |- ||_row_count||194Os|| 76 || 118||||||6.0 y ||aligncenter|β−|| |- ||_row_count||228Ra|| 88 || 140||||||5.75 y ||aligncenter|β−||aligncenter|DP |- ||_row_count||146Pm|| 61 || 85||||||5.53 y ||aligncenter|β+ (66), β− (34)|| |- ||_row_count||60Co|| 27 || 33||||||5.271 y ||aligncenter|β−||aligncenter|IM |- ||_row_count||155Eu|| 63 || 92||||||4.742 y ||aligncenter|β−||aligncenter|FP |- ||_row_count||101Rh|| 45 || 56||||||4.07 y ||aligncenter|β+|| |- ||_row_count||204Tl|| 81 || 123||||||3.78 y ||aligncenter|β− (97), β+ (2.9)||aligncenter|IM |- ||_row_count||102mRh|| 45 || 57||||||3.74 y ||aligncenter|β+, IT (0.2)|| |- ||_row_count||174Lu|| 71 || 103||||||3.31 y ||aligncenter|β+|| |- ||_row_count||208Po|| 84 || 124||||||2.898 y ||aligncenter|α, β+|| |- ||_row_count||236Pu|| 94 || 142||||||2.858 y ||aligncenter|α, SF|| |- ||_row_count||125Sb|| 51 || 74||||||2.758 y ||aligncenter|β−||aligncenter|FP |- ||_row_count||55Fe|| 26 || 29||||||2.756 y ||aligncenter|β+|| |- ||_row_count||252Cf|| 98 || 154||||||2.645 y ||aligncenter|α (97), SF (3.1)||aligncenter|IM |- ||_row_count||147Pm|| 61 || 86||||||2.623 y ||aligncenter|β−||aligncenter|FP |- ||_row_count||22Na|| 11 || 11||||||2.602 y ||aligncenter|β+||aligncenter|CG |- ||_row_count||134Cs|| 55 || 79||||||2.065 y ||aligncenter|β−, β+ ||aligncenter|FP |- ||_row_count||171Tm|| 69 || 102||||||1.92 y ||aligncenter|β− || |- ||_row_count||228Th|| 90 || 138||||||1.913 y ||aligncenter|α ||aligncenter|DP |- ||_row_count||172Hf|| 72 || 100||||||1.87 y ||aligncenter|β+|| |- ||_row_count||179Ta|| 73 || 106||||||1.82 y ||aligncenter|β+|| |- ||_row_count||173Lu|| 71 || 102||||||1.37 y ||aligncenter|β+|| |- ||_row_count||252Es|| 99 || 153||||||1.291 y ||aligncenter|α (78), β+ (22)|| |- ||_row_count||109Cd|| 48 || 61||||||1.263 y ||aligncenter|β+ || |- ||_row_count||235Np|| 93 || 142||||||1.084 y ||aligncenter|β+, α || |- ||_row_count||106Ru|| 44 || 62||||||1.018 y ||aligncenter|β− ||aligncenter|FP |- ||_row_count||144Pm|| 61 || 83||||||0.99 y ||aligncenter|β+ || |- ||_row_count||145Sm|| 62 || 83||||||340 d ||aligncenter| β+|| |- ||_row_count||248Cf|| 98 || 150||||||333.5 d ||aligncenter| α, SF|| |- ||_row_count||49V|| 23 || 26||||||330 d ||aligncenter| β+|| |- ||_row_count||249Bk|| 97 || 152||||||327.2 d ||aligncenter|β−, α, SF|| |- ||_row_count||54Mn|| 25 || 29||||||312.08 d ||aligncenter|β+, β−||aligncenter|IM |- ||_row_count||119mSn|| 50 || 69||||||293.1 d ||aligncenter| IT ||aligncenter|FP |- ||_row_count||144Ce|| 58 || 86||||||284.89 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||254Es|| 99 || 155||||||275.7 d ||aligncenter|α, β−, SF|| |- ||_row_count||57Co|| 27 || 30||||||271.81 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||68Ge|| 32 || 36||||||271.05 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||143Pm|| 61 || 82||||||265 d ||aligncenter| β+|| |- ||_row_count||110m2Ag|| 47 || 63||||||249.86 d ||aligncenter| β− (99), IT (1.3)||aligncenter|IM |- ||_row_count||65Zn|| 30 || 35||||||243.94 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||153Gd|| 64 || 89||||||240.6 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||102Rh|| 45 || 57||||||207 d ||aligncenter| β+ (78), β− (22)|| |- ||_row_count||195Au|| 79 || 116||||||186.01 d ||aligncenter| β+|| |- ||_row_count||184mRe|| 75 || 109||||||177.25 d ||aligncenter| IT (75), β+ (25)|| |- ||_row_count||194m2Ir|| 77 || 117||||||171 d ||aligncenter| β−|| |- ||_row_count||121mTe|| 52 || 69||||||164.7 d ||aligncenter| IT (89), β+ (11)|| |- ||_row_count||242Cm|| 96 || 146||||||162.8 d ||aligncenter| α, SF|| |- ||_row_count||45Ca|| 20 || 25||||||162.61 d ||aligncenter| β−|| |- ||_row_count||177m3Lu|| 71 || 106||||||160.4 d ||aligncenter| β− (77), IT (23)|| |- ||_row_count||159Dy|| 66 || 93||||||144.4 d ||aligncenter| β+|| |- ||_row_count||174mLu|| 71 || 103||||||142 d ||aligncenter| IT (99), ε (0.6) || |- ||_row_count||210Po|| 84 || 126||||||138.376 d ||aligncenter| α||aligncenter|DP |- ||_row_count||139Ce|| 58 || 81||||||137.64 d ||aligncenter| β+|| |- ||_row_count||123Sn|| 50 || 73||||||129.2 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||170Tm|| 69 || 101||||||128.6 d ||aligncenter|β−, β+ (0.13)|| |- ||_row_count||151Gd|| 64 || 87||||||123.9 d ||aligncenter|β+, α|| |- ||_row_count||181W|| 74 || 107||||||120.96 d ||aligncenter| β+|| |- ||_row_count||75Se|| 34 || 41||||||119.78 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||123mTe|| 52 || 71||||||119.2 d ||aligncenter| IT|| |- ||_row_count||113Sn|| 50 || 63||||||115.08 d ||aligncenter| β+|| |- ||_row_count||182Ta|| 73 || 109||||||114.7 d ||aligncenter| β−|| |- ||_row_count||88Y|| 39 || 49||||||106.63 d ||aligncenter| β+|| |- ||_row_count||127mTe|| 52 || 75||||||106.1 d ||aligncenter| IT (98), β− (2.1)||aligncenter|FP |- ||_row_count||257Fm|| 100 || 157||||||100.5 d ||aligncenter| α, SF (0.2)|| |- ||_row_count||168Tm|| 69 || 99||||||93.1 d ||aligncenter|β+, β−|| |- ||_row_count||149Eu|| 63 || 86||||||93.1 d ||aligncenter| β+|| |- ||_row_count||185Os|| 76 || 109||||||92.95 d ||aligncenter| β+|| |- ||_row_count||97mTc|| 43 || 54||||||91.1 d ||aligncenter| IT (96), ε (3.9)|| |- ||_row_count||35S|| 16 || 19||||||87.37 d ||aligncenter| β−||aligncenter|CG |- ||_row_count||83Rb|| 37 || 46||||||86.2 d ||aligncenter| β+|| |- ||_row_count||46Sc|| 21 || 25||||||83.76 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||88Zr|| 40 || 48||||||83.4 d ||aligncenter| β+|| |- ||_row_count||73As|| 33 || 40||||||80.3 d ||aligncenter| β+|| |- ||_row_count||56Co|| 27 || 29||||||77.24 d ||aligncenter| β+|| |- ||_row_count||185W|| 74 || 111||||||75.1 d ||aligncenter| β−|| |- ||_row_count||192Ir|| 77 || 115||||||73.82 d ||aligncenter| β− (95), ε (4.8)||aligncenter|IM |- ||_row_count||160Tb|| 65 || 95||||||72.3 d ||aligncenter| β−|| |- ||_row_count||58Co|| 27 || 31||||||70.84 d ||aligncenter| β+|| |- ||_row_count||183Re|| 75 || 108||||||70 d ||aligncenter| β+|| |- ||_row_count||175Hf|| 72 || 103||||||69.90 d ||aligncenter| β+|| |- ||_row_count||188W|| 74 || 114||||||69.77 d ||aligncenter| β−|| |- ||_row_count||85Sr|| 38 || 47||||||64.846 d ||aligncenter| β+|| |- ||_row_count||95Zr|| 40 || 55||||||64.032 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||95mTc|| 43 || 52||||||62.0 d ||aligncenter| β+ (96), IT (3.9)|| |- ||_row_count||91mNb|| 41 || 50||||||60.86 d ||aligncenter| IT (97), ε (3.4)|| |- ||_row_count||254Cf|| 98 || 156||||||60.5 d ||aligncenter|SF, α (0.3)|| |- ||_row_count||124Sb|| 51 || 73||||||60.12 d ||aligncenter| β−|| |- ||_row_count||125I|| 53 || 72||||||59.392 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||91Y|| 39 || 52||||||58.51 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||125mTe|| 52 || 73||||||57.4 d ||aligncenter| IT ||aligncenter|FP |- ||_row_count||148Eu|| 63 || 85||||||54.5 d ||aligncenter|β+, α|| |- ||_row_count||7Be|| 4 || 3||||||53.22 d ||aligncenter| β+||aligncenter|CG |- ||_row_count||258Md|| 101 || 157||||||51.6 d ||aligncenter| α, SF|| |- ||_row_count||89Sr|| 38 || 51||||||50.56 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||114mIn|| 49 || 65||||||49.51 d ||aligncenter| IT (97), β+ (3.2)|| |- ||_row_count||146Gd|| 64 || 82||||||48.27 d ||aligncenter| β+|| |- ||_row_count||203Hg|| 80 || 123||||||46.61 d ||aligncenter| β−|| |- ||_row_count||237Pu|| 94 || 143||||||45.64 d ||aligncenter|β+, α|| |- ||_row_count||115mCd|| 48 || 67||||||44.6 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||59Fe|| 26 || 33||||||44.50 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||181Hf|| 72 || 109||||||42.39 d ||aligncenter| β−|| |- ||_row_count||105Ag|| 47 || 58||||||41.29 d ||aligncenter| β+|| |- ||_row_count||148mPm|| 61 || 87||||||41.29 d ||aligncenter| β− (96), IT (4.2)|| |- ||_row_count||255Es|| 99 || 156||||||39.8 d ||aligncenter| β− (92), α (8.0), SF|| |- ||_row_count||103Ru|| 44 || 59||||||39.245 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||127Xe|| 54 || 73||||||36.342 d ||aligncenter| β+|| |- ||_row_count||184Re|| 75 || 109||||||35.4 d ||aligncenter| β+|| |- ||_row_count||37Ar|| 18 || 19||||||35.01 d ||aligncenter| β+||aligncenter|CG |- ||_row_count||95Nb|| 41 || 54||||||34.991 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||129mTe|| 52 || 77||||||33.6 d ||aligncenter| IT (64), β− (36)||aligncenter|FP |- ||_row_count||84Rb|| 37 || 47||||||32.82 d ||aligncenter| β+ (96), β− (3.9)|| |- ||_row_count||241Cm|| 96 || 145||||||32.8 d ||aligncenter| β+ (99), α (1.0)|| |- ||_row_count||141Ce|| 58 || 83||||||32.505 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||169Yb|| 70 || 99||||||32.014 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||240Cm|| 96 || 144||||||30 d ||aligncenter| α, SF || |- ||_row_count||260Md|| 101 || 159||||||27.8 d ||aligncenter| SF|| |- ||_row_count||51Cr|| 24 || 27||||||27.702 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||233Pa|| 91 || 142||||||26.98 d ||aligncenter| β−||aligncenter|DP |- ||_row_count||33P|| 15 || 18||||||25.35 d ||aligncenter| β−|| |- ||_row_count||82Sr|| 38 || 44||||||25.35 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||179m2Hf|| 72 || 107||||||25.0 d ||aligncenter| IT || |- ||_row_count||234Th|| 90 || 144||||||24.11 d ||aligncenter| β−||aligncenter|DP |- ||_row_count||147Eu|| 63 || 84||||||24.1 d ||aligncenter|β+, α|| |- ||_row_count||178W|| 74 || 104||||||21.6 d ||aligncenter| β+|| |- ||_row_count||253Es|| 99 || 154||||||20.47 d ||aligncenter| α, SF|| |- ||_row_count||230U|| 92 || 138||||||20.23 d ||aligncenter| α|| |- ||_row_count||121Te|| 52 || 69||||||19.31 d ||aligncenter| ε|| |- ||_row_count||227Th|| 90 || 137||||||18.693 d ||aligncenter| α||aligncenter|DP, IM |- ||_row_count||86Rb|| 37 || 49||||||18.645 d ||aligncenter|β−, β+|| |- ||_row_count||253Cf|| 98 || 155||||||17.81 d ||aligncenter|β−, α (0.3)|| |- ||_row_count||74As|| 33 || 41||||||17.8 d ||aligncenter| β+ (66), β− (34)|| |- ||_row_count||230Pa|| 91 || 139||||||17.4 d ||aligncenter| β+ (92), β− (7.8), α|| |- ||_row_count||103Pd|| 46 || 57||||||16.99 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||99Rh|| 45 || 54||||||16.1 d ||aligncenter| β+|| |- ||_row_count||48V|| 23 || 25||||||15.97 d ||aligncenter| β+|| |- ||_row_count||156Eu|| 63 || 93||||||15.19 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||191Os|| 76 || 115||||||14.99 d ||aligncenter| β−|| |- ||_row_count||205Bi|| 83 || 122||||||14.91 d ||aligncenter| β+|| |- ||_row_count||225Ra|| 88 || 137||||||14.8 d ||aligncenter|β−, α||aligncenter|DP |- ||_row_count||32P|| 15 || 17||||||14.269 d ||aligncenter| β−||aligncenter|CG, IM |- ||_row_count||117mSn|| 50 || 67||||||13.94 d ||aligncenter| IT ||aligncenter|FP |- ||_row_count||143Pr|| 59 || 84||||||13.57 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||189Ir|| 77 || 112||||||13.2 d ||aligncenter| β+|| |- ||_row_count||136Cs|| 55 || 81||||||13.01 d ||aligncenter| β−|| |- ||_row_count||126I|| 53 || 73||||||12.93 d ||aligncenter| β+ (53), β− (47)|| |- ||_row_count||140Ba|| 56 || 84||||||12.753 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||126Sb|| 51 || 75||||||12.35 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||202Tl|| 81 || 121||||||12.31 d ||aligncenter| β+|| |- ||_row_count||131mXe|| 54 || 77||||||11.95 d ||aligncenter| IT||aligncenter|FP |- ||_row_count||190Ir|| 77 || 113||||||11.751 d ||aligncenter| β+|| |- ||_row_count||131Ba|| 56 || 75||||||11.52 d ||aligncenter| β+|| |- ||_row_count||71Ge|| 32 || 39||||||11.468 d ||aligncenter| β+|| |- ||_row_count||223Ra|| 88 || 135||||||11.435 d ||aligncenter| α||aligncenter|DP, IM |- ||_row_count||147Nd|| 60 || 87||||||10.98 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||246Pu|| 94 || 152||||||10.84 d ||aligncenter| β−|| |- ||_row_count||193mIr|| 77 || 116||||||10.53 d ||aligncenter| IT || |- ||_row_count||188Pt|| 78 || 110||||||10.2 d ||aligncenter|β+, α|| |- ||_row_count||92mNb|| 41 || 51||||||10.12 d ||aligncenter| β+|| |- ||_row_count||225Ac|| 89 || 136||||||9.919 d ||aligncenter| α||aligncenter|DP, IM |- ||_row_count||131Cs|| 55 || 76||||||9.69 d||aligncenter| β+||aligncenter|IM |- ||_row_count||125Sn|| 50 || 75||||||9.63 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||169Er|| 68 || 101||||||9.39 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||149Gd|| 64 || 85||||||9.28 d ||aligncenter|β+, α|| |- ||_row_count||167Tm|| 69 || 98||||||9.25 d ||aligncenter| β+|| |- ||_row_count||129mXe|| 54 || 75||||||8.88 d ||aligncenter| IT || |- ||_row_count||206Po|| 84 || 122||||||8.8 d ||aligncenter| β+ (95), α (5.4)|| |- ||_row_count||72Se|| 34 || 38||||||8.40 d ||aligncenter| β+|| |- ||_row_count||106mAg|| 47 || 59|||||| 8.28 d ||aligncenter| β+|| |- ||_row_count||171Lu|| 71 || 100||||||8.25 d ||aligncenter| β+|| |- ||_row_count||131I|| 53 || 78||||||8.025 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||257Es|| 99 || 158||||||7.7 d ||aligncenter| β−, SF|| |- ||_row_count||111Ag|| 47 || 64||||||7.43 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||161Tb|| 65 || 96||||||6.948 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||237U|| 92 || 145||||||6.752 d ||aligncenter| β−||aligncenter|DP |- ||_row_count||172Lu|| 71 || 101||||||6.70 d ||aligncenter| β+|| |- ||_row_count||177Lu|| 71 || 106||||||6.644 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||132Cs|| 55 || 77||||||6.48 d ||aligncenter| β+ (98), β− (1.6)|| |- ||_row_count||206Bi|| 83 || 123||||||6.243 d ||aligncenter| β+|| |- ||_row_count||196Au|| 79 || 117||||||6.17 d ||aligncenter| β+ (93), β− (7)|| |- ||_row_count||56Ni|| 28 || 28||||||6.075 d ||aligncenter| β+|| |- ||_row_count||118Te|| 52 || 66||||||6.00 d ||aligncenter| β+|| |- ||_row_count||145Eu|| 63 || 82||||||5.93 d ||aligncenter| β+|| |- ||_row_count||120mSb|| 51 || 69||||||5.76 d ||aligncenter| β+|| |- ||_row_count||52Mn|| 25 || 27||||||5.591 d ||aligncenter| β+|| |- ||_row_count||148Pm|| 61 || 87||||||5.368 d ||aligncenter| β−|| |- ||_row_count||156Tb|| 65 || 91||||||5.35 d ||aligncenter| β+|| |- ||_row_count||133Xe|| 54 || 79||||||5.247 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||155Tb|| 65 || 90||||||5.235 d ||aligncenter| β+|| |- ||_row_count||183Ta|| 73 || 110||||||5.1 d ||aligncenter| β−|| |- ||_row_count||210Bi|| 83 || 127||||||5.012 d ||aligncenter|β−, α||aligncenter|DP |- ||_row_count||245Bk|| 97 || 148||||||4.95 d ||aligncenter|β+, α (0.12)|| |- ||_row_count||119mTe|| 52 || 67||||||4.70 d ||aligncenter| β+|| |- ||_row_count||146Eu|| 63 || 83||||||4.61 d ||aligncenter| β+|| |- ||_row_count||47Ca|| 20 || 27||||||4.536 d ||aligncenter| β−|| |- ||_row_count||234Np|| 93 || 141||||||4.4 d ||aligncenter| β+|| |- ||_row_count||101mRh||45||56||||||4.34 d ||aligncenter|ε (93), IT (7.2)|| |- ||_row_count||193mPt||78||115||||||4.33 d ||aligncenter|IT|| |- ||_row_count||96Tc|| 43 || 53||||||4.28 d ||aligncenter| β+|| |- ||_row_count||231U|| 92 || 139||||||4.2 d ||aligncenter|β+, α|| |- ||_row_count||175Yb|| 70 || 105||||||4.185 d ||aligncenter| β−|| |- ||_row_count||124I|| 53 || 71||||||4.176 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||195mPt||78||117||||||4.010 d ||aligncenter|IT|| |- ||_row_count||127Sb|| 51 || 76||||||3.85 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||222Rn|| 86 || 136||||||3.822 d ||aligncenter| α||aligncenter|DP |- ||_row_count||186Re||75||111||||||3.719 d ||aligncenter|β− (93), ε (7.5)||aligncenter|IM |- ||_row_count||224Ra|| 88 || 136||||||3.632 d ||aligncenter| α||aligncenter|DP |- ||_row_count||100Pd|| 46 || 54||||||3.63 d ||aligncenter| β+|| |- ||_row_count||95mNb||41||54||||||3.61 d ||aligncenter|IT (94), β− (5.6)||aligncenter|FP |- ||_row_count||166Dy|| 66 || 100||||||3.40 d ||aligncenter| β−|| |- ||_row_count||140Nd|| 60 || 80||||||3.37 d ||aligncenter| β+|| |- ||_row_count||47Sc|| 21 || 26||||||3.349 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||87Y|| 39 || 48||||||3.33 d ||aligncenter| β+|| |- ||_row_count||89Zr|| 40 || 49||||||3.265 d ||aligncenter| β+|| |- ||_row_count||67Ga|| 31 || 36||||||3.262 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||132Te|| 52 || 80||||||3.20 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||134Ce|| 58 || 76||||||3.16 d ||aligncenter| β+|| |- ||_row_count||199Au|| 79 || 120||||||3.139 d ||aligncenter| β−|| |- ||_row_count||201Tl|| 81 || 120||||||3.042 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||253Fm|| 100 || 153||||||3.0 d ||aligncenter| β+ (88), α (12)|| |- ||_row_count||97Ru|| 44 || 53||||||2.837 d ||aligncenter| β+|| |- ||_row_count||191Pt|| 78 || 113||||||2.83 d ||aligncenter| β+|| |- ||_row_count||111In|| 49 || 62||||||2.805 d ||aligncenter| β+||aligncenter|IM |- ||_row_count||99Mo|| 42 || 57||||||2.747 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||122Sb|| 51 || 71||||||2.724 d ||aligncenter| β− (98), β+ (2.4)|| |- ||_row_count||71As|| 33 || 38||||||2.721 d ||aligncenter| β+|| |- ||_row_count||197Hg|| 80 || 117||||||2.705 d ||aligncenter| β+|| |- ||_row_count||198Au|| 79 || 119||||||2.695 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||182Re|| 75 || 107||||||2.68 d ||aligncenter| β+|| |- ||_row_count||90Y|| 39 || 51||||||2.669 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||172Tm|| 69 || 103||||||2.65 d ||aligncenter| β−|| |- ||_row_count||67Cu|| 29 || 38||||||2.576 d ||aligncenter| β−||aligncenter|IM |- ||_row_count||44m3Sc|| 21 || 23||||||2.442 d ||aligncenter| IT, β+|| |- ||_row_count||128Ba|| 56 || 72||||||2.43 d ||aligncenter| β+|| |- ||_row_count||77Br|| 35 || 42||||||2.377 d ||aligncenter| β+|| |- ||_row_count||166Yb|| 70 || 96||||||2.363 d ||aligncenter| β+|| |- ||_row_count||239Np|| 93 || 146||||||2.356 d ||aligncenter| β−||aligncenter|DP |- ||_row_count||177Ta|| 73 || 104||||||2.348 d ||aligncenter| β+|| |- ||_row_count||153Tb|| 65 || 88||||||2.34 d ||aligncenter| β+|| |- ||_row_count||66Ni|| 28 || 38||||||2.28 d ||aligncenter| β−|| |- ||_row_count||247Pu|| 94 || 153||||||2.27 d ||aligncenter| β−|| |- ||_row_count||198m2Au||79||119||||||2.27 d ||aligncenter|IT|| |- ||_row_count||115Cd||48||67||||||2.228 d ||aligncenter|β−||aligncenter|FP |- ||_row_count||149Pm|| 61 || 88||||||2.212 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||133mXe||54||79||||||2.20 d ||aligncenter|IT||aligncenter|FP |- ||_row_count||203Pb|| 82 || 121||||||2.164 d ||aligncenter| β+|| |- ||_row_count||240Am|| 95 || 145||||||2.12 d ||aligncenter|β+, α|| |- ||_row_count||238Np|| 93 || 145||||||2.099 d ||aligncenter| β−|| |- ||_row_count||172Er|| 68 || 104||||||2.05 d ||aligncenter| β−|| |- ||_row_count||170Lu|| 71 || 99||||||2.01 d ||aligncenter| β+|| |- ||_row_count||72Zn|| 30 || 42||||||1.938 d ||aligncenter| β−|| |- ||_row_count||153Sm|| 62 || 91||||||1.929 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count||202Pt|| 78 || 124||||||1.83 d ||aligncenter| β−|| |- ||_row_count||48Sc|| 21 || 27||||||1.820 d ||aligncenter| β−|| |- ||_row_count||246Bk|| 97 || 149||||||1.80 d ||aligncenter| β+|| |- ||_row_count||195mHg|| 80 || 115||||||1.733 d ||aligncenter| IT (54), β+ (46)|| |- ||_row_count||188Ir|| 77 || 111||||||1.73 d ||aligncenter| β+|| |- ||_row_count||140La|| 57 || 83||||||1.679 d ||aligncenter| β−||aligncenter|FP, IM |- ||_row_count|| 254mEs||99||155||||||1.638 d ||aligncenter|β−, α (0.3), ε (0.08)|| |- ||_row_count||69Ge|| 32 || 37||||||1.627 d ||aligncenter| β+|| |- ||_row_count||133mBa||56||77||||||1.621 d ||aligncenter|IT, ε|| |- ||_row_count||77As|| 33 || 44||||||1.616 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||119Sb|| 51 || 68||||||1.591 d ||aligncenter| β+|| |- ||_row_count||147Gd|| 64 || 83||||||1.586 d ||aligncenter| β+|| |- ||_row_count||194Au|| 79 || 115||||||1.584 d ||aligncenter| β+|| |- ||_row_count||229Pa|| 91 || 138||||||1.55 d ||aligncenter|β+, α (0.5)|| |- ||_row_count||246Cf|| 98 || 148||||||1.49 d ||aligncenter| α, SF|| |- ||_row_count||57Ni|| 28 || 29||||||1.483 d ||aligncenter| β+|| |- ||_row_count||105Rh|| 45 || 60||||||1.473 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||82Br|| 35 || 47||||||1.470 d ||aligncenter| β−|| |- ||_row_count||79Kr|| 36 || 43||||||1.46 d ||aligncenter| β+|| |- ||_row_count||137mCe|| 58 || 79||||||1.43 d ||aligncenter| IT (99), β+ (0.8)|| |- ||_row_count||169Lu|| 71 || 98||||||1.419 d ||aligncenter| β+|| |- ||_row_count||143Ce|| 58 || 85||||||1.377 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||251Es|| 99 || 152||||||1.38 d ||aligncenter|β+, α (0.5)|| |- ||_row_count||131mTe|| 52 || 79||||||1.353 d ||aligncenter| β− (74), IT (26)||aligncenter|FP |- ||_row_count||83Sr|| 38 || 45||||||1.350 d ||aligncenter| β+|| |- ||_row_count||129Cs|| 55 || 74||||||1.336 d ||aligncenter| β+|| |- ||_row_count||232Pa|| 91 || 141||||||1.32 d ||aligncenter| β−|| |- ||_row_count||165Tm|| 69 || 96||||||1.253 d ||aligncenter| β+|| |- ||_row_count||193Os|| 76 || 117||||||1.243 d ||aligncenter| β−|| |- ||_row_count||226Ac|| 89 || 137||||||1.224 d ||aligncenter| β− (83), β+ (17), α|| |- ||_row_count||160Er|| 68 || 92||||||1.191 d ||aligncenter| β+|| |- ||_row_count||151Pm|| 61 || 90||||||1.183 d ||aligncenter| β−||aligncenter|FP |- ||_row_count||135mBa||56||79||||||1.171 d ||aligncenter|IT|| |- ||_row_count||121Sn||50||71||||||1.126 d ||aligncenter|β−||aligncenter|FP |- ||_row_count||166Ho||67||99||||||1.117 d ||aligncenter|β−||aligncenter|IM |- ||_row_count||76As|| 33 || 43||||||1.093 d ||aligncenter| β−|| |- ||_row_count||200Tl|| 81 || 119||||||1.088 d ||aligncenter| β+|| |- ||_row_count||72As|| 33 || 39||||||1.083 d ||aligncenter| β+|| |- ||_row_count||231Th|| 90 || 141||||||1.063 d ||aligncenter| β−||aligncenter|DP |- ||_row_count||252Fm|| 100 || 152||||||1.058 d ||aligncenter| α, SF|| |- ||_row_count||156m2Tb||65||91||||||1.02 d ||aligncenter|IT|| |- ||_row_count||189Re|| 75 || 114||||||1.01 d ||aligncenter| β−|| |- |}

Radionuclides with half-lives of 1 hour to 1 day

Ordered by half-life. . --

! No. !! Nuclide !! Z !! N !! Energy !! Half-life (seconds) !! Half-life (hours) !! Decay mode !! Notes |- ||_row_count||197mHg||80||117||||||23.82||aligncenter| IT|| |- ||_row_count||187W||74||113||||||23.81||aligncenter| β−|| |- ||_row_count||248mBk||97||151||||||23.7||aligncenter| β− (70), ε (30)|| |- ||_row_count||173Hf||72||101||||||23.6||aligncenter| β+|| |- ||_row_count||96Nb||41||55||||||23.35||aligncenter| β−|| |- ||_row_count||154m2Tb||65||89||||||22.7||aligncenter| β+|| |- ||_row_count||236mNp||93||143||||||22.5||aligncenter| ε (50), β− (50)|| |- ||_row_count||43K||19||24||||||22.3||aligncenter| β−|| |- ||_row_count||228Pa||91||137||||||22||aligncenter| β+ (98), α (2)|| |- ||_row_count||182Os||76||106||||||21.8||aligncenter| β+|| |- ||_row_count||48Cr||24||24||||||21.56||aligncenter| β+|| |- ||_row_count||154m1Tb||65||89||||||21.5||aligncenter| β+|| |- ||_row_count||200Pb||82||118||||||21.5||aligncenter| β+|| |- ||_row_count||112Pd||46||66||||||21.0||aligncenter| β−||aligncenter|FP |- ||_row_count||28Mg||12||16||||||20.92||aligncenter| β−||aligncenter|CG |- ||_row_count||133I||53||80||||||20.83||aligncenter| β−||aligncenter|FP |- ||_row_count||100Rh||45||55||||||20.8||aligncenter| β+|| |- ||_row_count||122Xe||54||68||||||20.1||aligncenter| β+|| |- ||_row_count||255Fm||100||155||||||20.07||aligncenter| α, SF|| |- ||_row_count||181Re||75||106||||||19.9||aligncenter| β+|| |- ||_row_count||197Pt||78||119||||||19.89||aligncenter| β−|| |- ||_row_count||194Ir||77||117||||||19.35||aligncenter| β−|| |- ||_row_count||95Tc||43||52||||||19.26||aligncenter| β+|| |- ||_row_count||142Pr||59||83||||||19.1||aligncenter|β−, ε|| |- ||_row_count||135La||57||78||||||18.91||aligncenter| β+|| |- ||_row_count||200mAu||79||121||||||18.7||aligncenter| β− (84), IT (16)|| |- ||_row_count||159Gd||64||95||||||18.48||aligncenter| β−||aligncenter|FP |- ||_row_count||152Tb||65||87||||||17.88||aligncenter| β+|| |- ||_row_count||135Ce||58||77||||||17.7||aligncenter| β+|| |- ||_row_count||193Au||79||114||||||17.7||aligncenter| β+|| |- ||_row_count||151Tb||65||86||||||17.61||aligncenter|β+, α|| |- ||_row_count||55Co||27||28||||||17.53||aligncenter| β+|| |- ||_row_count||188Re||75||113||||||17.01||aligncenter| β−||aligncenter|IM |- ||_row_count||125Xe||54||71||||||16.87||aligncenter| β+|| |- ||_row_count||97Zr||40||57||||||16.75||aligncenter| β−||aligncenter|FP |- ||_row_count||186Ir||77||109||||||16.64||aligncenter| β+|| |- ||_row_count||86Zr||40||46||||||16.5||aligncenter| β+|| |- ||_row_count||76Br||35||41||||||16.2||aligncenter| β+|| |- ||_row_count||119Te||52||67||||||16.05||aligncenter| β+|| |- ||_row_count||242Am||95||147||||||16.02||aligncenter| β− (83), ε (17)|| |- ||_row_count||170Hf||72||98||||||16.0||aligncenter| β+|| |- ||_row_count||268Db||105||163||||||16These superheavy isotopes have large statistical uncertainties in their half-lives because only a small number of atoms have been counted one at a time. They are given in their originally reported form with two significant figures, but would not deserve it by the standards applied to other isotopes. The actual uncertainty can be found through the isotope link.||aligncenter| α (51), SF (49)|| |- ||_row_count||157Eu||63||94||||||15.18||aligncenter| β−||aligncenter|FP |- ||_row_count||24Na||11||13||||||14.96||aligncenter| β−||aligncenter|CG, IM |- ||_row_count||76Kr||36||40||||||14.8||aligncenter| β+|| |- ||_row_count||86Y||39||47||||||14.74||aligncenter| β+|| |- ||_row_count||90Nb||41||49||||||14.60||aligncenter| β+|| |- ||_row_count||211Rn||86||125||||||14.6||aligncenter| β+ (73), α (27)|| |- ||_row_count||185Ir||77||108||||||14.4||aligncenter| β+|| |- ||_row_count||182mRe||75||107||||||14.1||aligncenter| β+|| |- ||_row_count||240U||92||148||||||14.1||aligncenter| β−||aligncenter| |- ||_row_count||72Ga||31||41||||||14.03||aligncenter| β−|| |- ||_row_count||69mZn||30||39||||||13.75||aligncenter|IT, β−|| |- ||_row_count||109Pd||46||63||||||13.6||aligncenter| β−||aligncenter|FP |- ||_row_count||87mY||39||48||||||13.37||aligncenter| IT (98), β+ (1.6)|| |- ||_row_count||123I||53||70||||||13.2||aligncenter| β+||aligncenter|IM |- ||_row_count||191mOs||76||115||||||13.10||aligncenter| IT|| |- ||_row_count||183Os||76||107||||||13.0||aligncenter| β+|| |- ||_row_count||150mEu||63||87||||||12.8||aligncenter| β− (89), β+(11)|| |- ||_row_count||64Cu||29||35||||||12.70||aligncenter| β+ (62), β− (38)||aligncenter|IM |- ||_row_count||200Pt||78||122||||||12.6||aligncenter| β−|| |- ||_row_count||130I||53||77||||||12.36||aligncenter| β−|| |- ||_row_count||42K||19||23||||||12.36||aligncenter| β−||aligncenter|IM |- ||_row_count||171Hf||72||99||||||12.1||aligncenter| β+|| |- ||_row_count||239Am||95||144||||||11.9||aligncenter|β+, α|| |- ||_row_count||193mHg||80||113||||||11.8||aligncenter| β+ (93), IT (7.2)|| |- ||_row_count||203Bi||83||120||||||11.76||aligncenter| β+|| |- ||_row_count||204Bi||83||121||||||11.22||aligncenter| β+|| |- ||_row_count||77Ge||32||45||||||11.21||aligncenter| β−||aligncenter|FP |- ||_row_count||266Lr||103||163||||||11||aligncenter| SF|| |- ||_row_count||189Pt||78||111||||||10.9||aligncenter| β+|| |- ||_row_count||195Hg||80||115||||||10.7||aligncenter| β+|| |- ||_row_count||212Pb||82||130||||||10.63||aligncenter| β−||aligncenter|DP, IM |- ||_row_count||175Ta||73||102||||||10.5||aligncenter| β+|| |- ||_row_count||187Ir||77||110||||||10.5||aligncenter| β+|| |- ||_row_count||245Pu||94||151||||||10.5||aligncenter| β−|| |- ||_row_count||165Er||68||97||||||10.36||aligncenter| β+|| |- ||_row_count||93Y||39||54||||||10.18||aligncenter| β−||aligncenter|FP |- ||_row_count||244Am||95||149||||||10.01||aligncenter| β−|| |- ||_row_count||154Tb||65||89||||||9.99||aligncenter| β+|| |- ||_row_count||155Dy||66||89||||||9.9||aligncenter| β+|| |- ||_row_count||183mOs||76||107||||||9.9||aligncenter| β+ (85), IT(15)|| |- ||_row_count||91Sr||38||53||||||9.65||aligncenter| β−||aligncenter|FP |- ||_row_count||196m2Au||79||117||||||9.60||aligncenter| IT|| |- ||_row_count||156Sm||62||94||||||9.4||aligncenter| β−||aligncenter|FP |- ||_row_count||127Te||52||75||||||9.35||aligncenter| β−||aligncenter|FP |- ||_row_count||201Pb||82||119||||||9.33||aligncenter| β+|| |- ||_row_count||152mEu||63||89||||||9.31||aligncenter|β- (73), β+(27)|| |- ||_row_count||66Ga||31||35||||||9.30||aligncenter| β+|| |- ||_row_count||62Zn||30||32||||||9.19||aligncenter| β+|| |- ||_row_count||135Xe||54||81||||||9.14||aligncenter| β−||aligncenter|FP |- ||_row_count||128Sb||51||77||||||9.01||aligncenter| β−||aligncenter|FP |- ||_row_count||137Ce||58||79||||||9.0||aligncenter| β+|| |- ||_row_count||58mCo||27||31||||||8.85||aligncenter| IT, β+|| |- ||_row_count||234Pu||94||140||||||8.8||aligncenter| β+ (94), α (6)|| |- ||_row_count||184Ta||73||111||||||8.7||aligncenter| β−|| |- ||_row_count||250Es||99||151||||||8.6||aligncenter| β+|| |- ||_row_count||101Pd||46||55||||||8.47||aligncenter| β+|| |- ||_row_count||52Fe||26||26||||||8.28||aligncenter| β+|| |- ||_row_count||173Tm||69||104||||||8.24||aligncenter| β−|| |- ||_row_count||180Ta||73||107||||||8.15||aligncenter| ε (85), β− (15)|| |- ||_row_count||157Dy||66||91||||||8.14||aligncenter| β+|| |- ||_row_count||210At||85||125||||||8.1||aligncenter|β+, α (0.2)|| |- ||_row_count||176Ta||73||103||||||8.09||aligncenter| β+|| |- ||_row_count||166Tm||69||97||||||7.70||aligncenter| β+|| |- ||_row_count||256Es||99||157||||||7.6||aligncenter| β−|| |- ||_row_count||171Er||68||103||||||7.52||aligncenter| β−|| |- ||_row_count||199Tl||81||118||||||7.42||aligncenter| β+|| |- ||_row_count||211At||85||126||||||7.21||aligncenter| β+ (58), α (42)||aligncenter|IM |- ||_row_count||73Se||34||39||||||7.15||aligncenter| β+|| |- ||_row_count||93mMo||42||51||||||6.85||aligncenter|IT, β+ (0.1)|| |- ||_row_count||234Pa||91||143||||||6.70||aligncenter| β−||aligncenter|DP |- ||_row_count||135I||53||82||||||6.58||aligncenter| β−||aligncenter|FP |- ||_row_count||107Cd||48||59||||||6.50||aligncenter| β+|| |- ||_row_count||82mRb||37||45||||||6.47||aligncenter| β+|| |- ||_row_count||153Dy||66||87||||||6.4||aligncenter| β+, α|| |- ||_row_count||127Cs||55||72||||||6.25||aligncenter| β+|| |- ||_row_count||228Ac||89||139||||||6.15||aligncenter| β−||aligncenter|DP |- ||_row_count||99mTc||43||56||||||6.01||aligncenter|IT, β−||aligncenter|FP, IM |- ||_row_count||145Pr||59||86||||||5.98||aligncenter| β−||aligncenter|FP |- ||_row_count||189mOs||76||113||||||5.81||aligncenter| IT|| |- ||_row_count||207Po||84||123||||||5.80||aligncenter| β+, α|| |- ||_row_count||111mPd||46||65||||||5.56||aligncenter| IT (77), β− (23)|| |- ||_row_count||90Mo||42||48||||||5.56||aligncenter| β+|| |- ||_row_count||180mHf||72||108||||||5.53||aligncenter|IT, β− (0.3)|| |- ||_row_count||257Md||101||156||||||5.52||aligncenter| ε (85), α (15)|| |- ||_row_count||139mNd||60||79||||||5.50||aligncenter| β+ (87), IT (13)|| |- ||_row_count||209At||85||124||||||5.42||aligncenter| β+ (96), α (3.9)|| |- ||_row_count||113Ag||47||66||||||5.37||aligncenter| β−|| |- ||_row_count||156m1Tb||65||91||||||5.3||aligncenter| IT|| |- ||_row_count||198Tl||81||117||||||5.3||aligncenter| β+|| |- ||_row_count||251Fm||100||151||||||5.30||aligncenter| β+ (98), α (1.8)|| |- ||_row_count||133mCe||58||75||||||5.1||aligncenter| β+|| |- ||_row_count||138Nd||60||78||||||5.04||aligncenter| β+|| |- ||_row_count||160mHo||67||93||||||5.02||aligncenter| IT (73), β+ (27)|| |- ||_row_count||244Bk||97||147||||||5.02||aligncenter|β+, α|| |- ||_row_count||118m2Sb||51||67||||||5.00||aligncenter| β+|| |- ||_row_count||243Pu||94||149||||||4.96||aligncenter| β−|| |- ||_row_count||192Au||79||113||||||4.94||aligncenter| β+|| |- ||_row_count||110In||49||61||||||4.92||aligncenter| β+|| |- ||_row_count||94Tc||43||51||||||4.88||aligncenter| β+|| |- ||_row_count||85mY||39||46||||||4.86||aligncenter| β+|| |- ||_row_count||73Ga||31||42||||||4.86||aligncenter| β−|| |- ||_row_count||192Hg||80||112||||||4.85||aligncenter| β+|| |- ||_row_count||99mRh||45||54||||||4.7||aligncenter| β+|| |- ||_row_count||243Bk||97||146||||||4.6||aligncenter|β+, α (0.15)|| |- ||_row_count||264Lr||103||161||||||4.6||aligncenter| SF|| |- ||_row_count||132La||57||75||||||4.59||aligncenter| β+|| |- ||_row_count||179Lu||71||108||||||4.59||aligncenter| β−|| |- ||_row_count||81Rb||37||44||||||4.57||aligncenter| β+||aligncenter|IM |- ||_row_count||115mIn||49||66||||||4.49||aligncenter| IT (95), β− (5.0)||aligncenter|FP |- ||_row_count||85mKr||36||49||||||4.48||aligncenter| β− (79), IT (21)||aligncenter|FP |- ||_row_count||105Ru||44||61||||||4.44||aligncenter| β−||aligncenter|FP |- ||_row_count||80mBr||35||45||||||4.42||aligncenter| IT|| |- ||_row_count||139Pr||59||80||||||4.41||aligncenter| β+|| |- ||_row_count||129Sb||51||78||||||4.40||aligncenter| β−||aligncenter|FP |- ||_row_count||109In||49||60||||||4.16||aligncenter| β+|| |- ||_row_count||110Sn||50||60||||||4.15||aligncenter| β+|| |- ||_row_count||71mZn||30||41||||||4.15||aligncenter| β−|| |- ||_row_count||184Hf||72||112||||||4.12||aligncenter| β−|| |- ||_row_count||149Tb||65||84||||||4.12||aligncenter| β+ (83), α (17)|| |- ||_row_count||44Sc||21||23||||||4.04||aligncenter| β+|| |- ||_row_count||262Lr||103||159||||||4||aligncenter| β+, SF|| |- ||_row_count||141La||57||84||||||3.92||aligncenter| β−||aligncenter|FP |- ||_row_count||133La||57||76||||||3.91||aligncenter| β+|| |- ||_row_count||43Sc||21||22||||||3.89||aligncenter| β+|| |- ||_row_count||193Hg||80||113||||||3.80||aligncenter| β+|| |- ||_row_count||195mIr||77||118||||||3.74||aligncenter| β−|| |- ||_row_count||176mLu||71||105||||||3.66||aligncenter|β−, ε (0.1)|| |- ||_row_count||202mPb||82||120||||||3.54||aligncenter| IT (90), β+ (9.5)|| |- ||_row_count||92Y||39||53||||||3.54||aligncenter| β−||aligncenter|FP |- ||_row_count||204Po||84||120||||||3.52||aligncenter| β+ (99), α (0.7)|| |- ||_row_count||132Ce||58||74||||||3.51||aligncenter| β+|| |- ||_row_count||150Tb||65||85||||||3.48||aligncenter| β+|| |- ||_row_count||117mCd||48||69||||||3.44||aligncenter| β−||aligncenter|FP |- ||_row_count||61Cu||29||32||||||3.34||aligncenter| β+|| |- ||_row_count||254Fm||100||154||||||3.24||aligncenter| α, SF (0.06)|| |- ||_row_count||209Pb||82||127||||||3.24||aligncenter| β−||aligncenter| DP |- ||_row_count||90mY||39||51||||||3.23||aligncenter|IT, β−|| |- ||_row_count||250Bk||97||153||||||3.21||aligncenter| β−|| |- ||_row_count||161Er||68||93||||||3.21||aligncenter| β+|| |- ||_row_count||191Au||79||112||||||3.18||aligncenter| β+|| |- ||_row_count||173Ta||73||100||||||3.14||aligncenter| β+|| |- ||_row_count||112Ag||47||65||||||3.13||aligncenter| β−|| |- ||_row_count||247Cf||98||149||||||3.11||aligncenter|β+, α|| |- ||_row_count||167Ho||67||100||||||3.1||aligncenter| β−|| |- ||_row_count||190mRe||75||115||||||3.1||aligncenter| β− (54), IT (46)|| |- ||_row_count||184Ir||77||107||||||3.09||aligncenter| β+|| |- ||_row_count||190m3Ir||77||113||||||3.09||aligncenter| β+ (91), IT (8.6)|| |- ||_row_count||45Ti||22||23||||||3.08||aligncenter| β+|| |- ||_row_count||134mCs||55||79||||||2.91||aligncenter|IT, ε (0.3)|| |- ||_row_count||197Tl||81||116||||||2.84||aligncenter| β+|| |- ||_row_count||38S||16||22||||||2.84||aligncenter| β−|| |- ||_row_count||88Kr||36||52||||||2.83||aligncenter| β−||aligncenter|FP |- ||_row_count||87mSr||38||49||||||2.81||aligncenter|IT, ε (0.3)|| |- ||_row_count||117Sb||51||66||||||2.80||aligncenter| β+|| |- ||_row_count||224Ac||89||135||||||2.78||aligncenter| β+ (91), α (9.5)|| |- ||_row_count||93Tc||43||50||||||2.75||aligncenter| β+|| |- ||_row_count||150Pm||61||89||||||2.70||aligncenter| β−|| |- ||_row_count||85Y||39||46||||||2.68||aligncenter| β+|| |- ||_row_count||31Si||14||17||||||2.62||aligncenter| β−||aligncenter|CG |- ||_row_count||256Fm||100||156||||||2.62||aligncenter| SF (92), α (8.1)|| |- ||_row_count||92Sr||38||54||||||2.61||aligncenter| β−||aligncenter|FP |- ||_row_count||56Mn||25||31||||||2.58||aligncenter| β−|| |- ||_row_count||65Ni||28||37||||||2.52||aligncenter| β−|| |- ||_row_count||117Cd||48||69||||||2.50||aligncenter| β−||aligncenter|FP |- ||_row_count||176W||74||102||||||2.5||aligncenter| β+|| |- ||_row_count||239Cm||96||143||||||2.5||aligncenter|β+, α|| |- ||_row_count||116Te||52||64||||||2.49||aligncenter| β+|| |- ||_row_count||141Nd||60||81||||||2.49||aligncenter| β+|| |- ||_row_count||161Ho||67||94||||||2.48||aligncenter| β+|| |- ||_row_count||210Rn||86||124||||||2.40||aligncenter| α (96), β+ (4)|| |- ||_row_count||198Pb||82||116||||||2.4||aligncenter| β+|| |- ||_row_count||152Dy||66||86||||||2.38||aligncenter|β+, α (0.1)||aligncenter|IM |- ||_row_count||83Br||35||48||||||2.37||aligncenter| β−||aligncenter|FP |- ||_row_count||178Ta||73||105||||||2.36||aligncenter| β+|| |- ||_row_count||187Pt||78||109||||||2.35||aligncenter| β+|| |- ||_row_count||165Dy||66||99||||||2.33||aligncenter| β−||aligncenter|IM |- ||_row_count||132I||53||79||||||2.30||aligncenter| β−||aligncenter|FP |- ||_row_count||158Er||68||90||||||2.29||aligncenter| β+|| |- ||_row_count||195Ir||77||118||||||2.29||aligncenter| β−|| |- ||_row_count||66Ge||32||34||||||2.26||aligncenter| β+|| |- ||_row_count||129Ba||56||73||||||2.23||aligncenter| β+|| |- ||_row_count||250mEs||99||151||||||2.22||aligncenter| β+|| |- ||_row_count||177W||74||103||||||2.21||aligncenter| β+|| |- ||_row_count||238Cm||96||142||||||2.2||aligncenter| β+ (96), α (3.8), SF|| |- ||_row_count||106mRh||45||61||||||2.18||aligncenter| β−|| |- ||_row_count||129mBa||56||73||||||2.14||aligncenter| β+|| |- ||_row_count||138mPr||59||79||||||2.12||aligncenter| β+|| |- ||_row_count||121I||53||68||||||2.12||aligncenter| β+|| |- ||_row_count||127Sn||50||77||||||2.10||aligncenter| β−||aligncenter|FP |- ||_row_count||123Xe||54||69||||||2.08||aligncenter| β+|| |- ||_row_count||186Pt||78||108||||||2.08||aligncenter|β+, α|| |- ||_row_count||245Am||95||150||||||2.05||aligncenter| β−|| |- ||_row_count||89Nb||41||48||||||2.03||aligncenter| β+|| |- ||_row_count||117mIn||49||68||||||1.94||aligncenter| β− (53), IT (47)||aligncenter|FP |- ||_row_count||186mIr||77||109||||||1.92||aligncenter| β+ (~75), IT (~25)|| |- ||_row_count||177Yb||70||107||||||1.91||aligncenter| β−|| |- ||_row_count||198mTl||81||117||||||1.87||aligncenter| β+ (56), IT (44)|| |- ||_row_count||196Tl||81||115||||||1.84||aligncenter| β+|| |- ||_row_count||83m2Kr||36||47||||||1.83||aligncenter| IT||aligncenter|FP |- ||_row_count||18F||9||9||||||1.83||aligncenter| β+||aligncenter|CG, IM |- ||_row_count||41Ar||18||23||||||1.83||aligncenter| β−||aligncenter|CG |- ||_row_count||163Tm||69||94||||||1.81||aligncenter| β+|| |- ||_row_count||207At||85||122||||||1.81||aligncenter| β+ (~90), α (~10)|| |- ||_row_count||239Pa||91||148||||||1.8||aligncenter| β−|| |- ||_row_count||224Rn||86||138||||||1.78||aligncenter| β−|| |- ||_row_count||80Sr||38||42||||||1.77||aligncenter| β+|| |- ||_row_count||181Os||76||105||||||1.75||aligncenter| β+|| |- ||_row_count||205Po||84||121||||||1.74||aligncenter|β+, α|| |- ||_row_count||149Nd||60||89||||||1.73||aligncenter| β−||aligncenter|FP |- ||_row_count||202Bi||83||119||||||1.72||aligncenter| β+|| |- ||_row_count||201Bi||83||118||||||1.72||aligncenter| β+|| |- ||_row_count||249Es||99||150||||||1.70||aligncenter| β+ (99), α (0.6)|| |- ||_row_count||87Zr||40||47||||||1.68||aligncenter| β+|| |- ||_row_count||126Ba||56||70||||||1.67||aligncenter| β+|| |- ||_row_count||113mIn||49||64||||||1.66||aligncenter| IT|| |- ||_row_count||61Co||27||34||||||1.65||aligncenter| β−|| |- ||_row_count||147Tb||65||82||||||1.64||aligncenter| β+|| |- ||_row_count||238Am||95||143||||||1.63||aligncenter|β+, α|| |- ||_row_count||208At||85||123||||||1.63||aligncenter| β+ (99), α (0.6)|| |- ||_row_count||133Ce||58||75||||||1.62||aligncenter| β+|| |- ||_row_count||75Br||35||40||||||1.61||aligncenter| β+|| |- ||_row_count||95Ru||44||51||||||1.61||aligncenter| β+|| |- ||_row_count||259Md||101||158||||||1.60||aligncenter| SF|| |- ||_row_count||152m5Eu||63||89||||||1.60||aligncenter| IT|| |- ||_row_count||197mPt||78||119||||||1.59||aligncenter| IT (97), β− (3.3)|| |- ||_row_count||230Ra||88||142||||||1.55||aligncenter| β−|| |- ||_row_count||142La||57||85||||||1.52||aligncenter| β−||aligncenter|FP |- ||_row_count||78As||33||45||||||1.51||aligncenter| β−||aligncenter|FP |- ||_row_count||199Pb||82||117||||||1.5||aligncenter| β+|| |- ||_row_count||78Ge||32||46||||||1.47||aligncenter| β−||aligncenter|FP |- ||_row_count||255Cf||98||157||||||1.42||aligncenter| β−|| |- ||_row_count||196mTl||81||115||||||1.41||aligncenter| β+ (96), IT (3.8)|| |- ||_row_count||196mIr||77||119||||||1.40||aligncenter| β−|| |- ||_row_count||267Db||105||162||||||1.4||aligncenter| SF|| |- ||_row_count||132mI||53||79||||||1.39||aligncenter| IT (86), β− (14)||aligncenter|FP |- ||_row_count||139Ba||56||83||||||1.38||aligncenter| β−||aligncenter|FP |- ||_row_count||75Ge||32||43||||||1.38||aligncenter| β−|| |- ||_row_count||120I||53||67||||||1.36||aligncenter| β+|| |- ||_row_count||256Md||101||155||||||1.30||aligncenter| β+ (91), α (9.2)|| |- ||_row_count||137Pr||59||78||||||1.28||aligncenter| β+|| |- ||_row_count||87Kr||36||51||||||1.27||aligncenter| β−||aligncenter|FP |- ||_row_count||164Yb||70||94||||||1.26||aligncenter| β+|| |- ||_row_count||163Er||68||95||||||1.25||aligncenter| β+|| |- ||_row_count||178Yb||70||108||||||1.23||aligncenter| β−|| |- ||_row_count||237Am||95||142||||||1.23||aligncenter|β+, α|| |- ||_row_count||77Kr||36||41||||||1.21||aligncenter| β+|| |- ||_row_count||142Sm||62||80||||||1.21||aligncenter| β+|| |- ||_row_count||97Nb||41||56||||||1.20||aligncenter| β−||aligncenter|FP |- ||_row_count||185Pt||78||107||||||1.18||aligncenter| β+|| |- ||_row_count||195Tl||81||114||||||1.16||aligncenter| β+|| |- ||_row_count||129Te||52||77||||||1.16||aligncenter| β−||aligncenter|FP |- ||_row_count||104Ag||47||57||||||1.15||aligncenter| β+|| |- ||_row_count||110mIn||49||61||||||1.15||aligncenter| β+|| |- ||_row_count||174Ta||73||101||||||1.14||aligncenter| β+|| |- ||_row_count||68Ga||31||37||||||1.13||aligncenter| β+||aligncenter|IM |- ||_row_count||85mSr||38||47||||||1.13||aligncenter| IT (87), β+ (13)|| |- ||_row_count||190mIr||77||113||||||1.12||aligncenter| IT|| |- ||_row_count||162mHo||67||95||||||1.12||aligncenter| IT (62), β+ (38)|| |- ||_row_count||204m2Pb||82||122||||||1.12||aligncenter| IT|| |- ||_row_count||89mNb||41||48||||||1.10||aligncenter| β+|| |- ||_row_count||103Ag||47||56||||||1.10||aligncenter| β+|| |- ||_row_count||249Cm||96||153||||||1.07||aligncenter| β−|| |- ||_row_count||229Ac||89||140||||||1.05||aligncenter| β−|| |- ||_row_count||117Te||52||65||||||1.03||aligncenter| β+|| |- ||_row_count||240Np||93||147||||||1.03||aligncenter| β−||aligncenter| |- ||_row_count||182mHf||72||110||||||1.03||aligncenter| β− (54), IT (46)|| |- ||_row_count||183Hf||72||111||||||1.02||aligncenter| β−|| |- ||_row_count||212Bi||83||129||||||1.01||aligncenter| β− (64), α (36)||aligncenter| DP |- ||_row_count||116m2Sb||51||65||||||1.01||aligncenter| β+|| |- ||_row_count||148Tb||65||83||||||1.00||aligncenter| β+|| |- ||_row_count||270Db||105||165||||||1.0||aligncenter| α (~87), SF (~13)|| |- |}

Radionuclides with half-lives less than 1 hour

The following is incomplete and out of date, but is the only such list we have.

Main article: List of radioactive nuclides by half-life

Notes

References

References

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4. {{NUBASE2020
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