List of nuclides

This list of nuclides shows observed nuclides that either are stable or, if radioactive, have half-lives longer than one hour. At least 3,300 nuclides have been experimentally characterized[1] (see List of radioactive nuclides by half-life for the nuclides with decay half-lives less than one hour).

A nuclide is defined conventionally as an experimentally examined bound collection of protons and neutrons that either is stable or has an observed decay mode.

Introduction

252 nuclides are considered stable. Many of these in theory could decay through spontaneous fission, alpha decay, double beta decay, etc. with a very long half-life, but no radioactive decay has yet been observed. Thus the number of stable nuclides is subject to change if some of these 252 are determined to be very long-lived radioactive nuclides in the future. If a decay has been predicted theoretically but never observed experimentally (either directly or through finding an excess of the daughter), it is given in parentheses. Those that have been checked for radioactivity are indicated with "> number" and show the lower limit for the half-life based on experimental observation. Such nuclides are considered to be "stable" until a decay has been observed in some fashion. For example, tellurium-123 was reported to be radioactive, but the same experimental group later retracted this report, and it presently remains observationally stable.

The next group is the primordial radioactive nuclides. These have been measured to be radioactive, or decay products have been identified (Te-128, Ba-130). There are (currently) 34 of these (see these nuclides), of which 30 have half-lives considerably longer than the age of the universe (13.8 billion years). With most of these 30, decay is difficult to observe and for most purposes they can be regarded as effectively stable. Bismuth-209 is notable as the only naturally occurring isotope of an element long considered stable. A further 4 nuclides, thorium-232, uranium-238, potassium-40, and uranium-235 have half-lives between 14 billion and 700 million years, which means they have experienced significant depletion since the formation of the solar system about 4.6 billion 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.[2]

The list then covers the ~700 radionuclides with half-lives longer than 1 hour, split into two tables, half-lives greater than one day and less than one day. There are also more than 3000 radionuclides with half-lives less than an hour, listed are those that exist naturally in decay chains

Over 60 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 ~44 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 (e.g. cosmic ray spallation) (cosmogenic nuclides) such as carbon-14. This gives a total of about 350 naturally occurring nuclides. Other nuclides may be occasionally produced naturally but are difficult to detect by rare cosmogenic interactions or as a result of other natural nuclear reactions (nucleogenic nuclides).

Further shorter-lived nuclides have been detected in the spectra of stars (e.g. technetium, promethium, and some actinides). The remaining nuclides are known solely from artificial nuclear transmutation. Some, such as caesium-137, are found in the environment but as a result of contamination from releases of man-made nuclear fission product (from nuclear weapons, nuclear reactors, and other processes). Other are produced artificially for industrial or medical purposes.

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.

no (number) column
A running positive integer for reference. Especially for nuclides with short half-lives, this number, i.e. position in this table, might be changed in the future.
nuclide column
Nuclide identifiers are given by their atomic mass number A and the symbol for the corresponding chemical element (corresponding to the unique proton number). In the cases that this is not the ground state, this is indicated by a m for metastable appended to the mass number. Sorting here sorts by mass number.
Z, N column
The number of protons and number of neutrons.
energy column
The column labeled "energy" denotes the energy equivalent of the difference between the mass per nucleon of this nuclide and the mass of a neutron (so all nuclides get a positive value) in MeV, formally: mnmnuclide / A. Thus the mass of the nuclide (in daltons) is A (mnE / k) where E is the energy, mn is 1.008664915 Da and k = 931.4941 the conversion factor between MeV and daltons.
half-life column
The main column shows times in seconds (31,556,926 seconds = 1 year), a second column showing half-life in more usual units (year, day) is also provided.
Entries starting with a ">" indicates that no decay has ever been observed, with null experiments establishing lower limits for the half-life. Such elements are considered stable unless a decay can be observed (establishing an actual estimate for the half-life). Note half-lives may be imprecise estimates and can be subject to significant revision.
decay mode column
α α decay
β β decay
ββ double β decay
ε electron capture
β+ β+ decay
β+β+ double β+ decay
SF spontaneous fission
IT isomeric transition
Decay modes in parentheses are still not observed through experiment but are, by their energy, predicted to occur. Numbers in brackets indicate probability of that decay mode occurring in %, tr indicate <0.1%. Spontaneous fission is not shown as a theoretical decay mode for stable nuclides where other modes are possible (see these nuclides).
decay energy column
Multiple values for (maximal) decay energy are mapped to decay modes in their order. The decay energy listed is for the specific nuclide only, not for the whole decay chain. It includes the energy lost to neutrinos.
notes column
CG
Cosmogenic nuclide;
DP
Naturally occurring decay product (of thorium-232, uranium-238, and uranium-235);
FP
Nuclear fission product (only those from of uranium-235 or plutonium-239) (only those with a half-life over one day are shown);
IM
Industry or medically used radionuclide.[3]

Full list

Theoretically stable nuclides

nonuclideAZNenergy
156Fe5626309.153567
262Ni6228349.147877
360Ni6028329.145862
458Fe5826329.142938
552Cr5224289.137037
657Fe5726319.127119
759Co5927329.126046
854Cr5424309.125633
961Ni6128339.124129
1055Mn5525309.120611
1164Ni6428369.119754
1266Zn6630369.115258
1353Cr5324299.114435
1463Cu6329349.112272
1565Cu6529369.106154
1668Zn6830389.100845
1750Ti5022289.099861
1851V5123289.094884
1967Zn6730379.084468
2048Ti4822269.081488
2172Ge7232409.079465
2270Ge7032389.079372
2369Ga6931389.076078
2488Sr8838509.070438
2574Ge7432429.063522
2649Ti4922279.062323
2776Se7634429.061485
2871Ga7131409.059218
2978Se7834449.058842
3090Zr9040509.057631
3189Y8939509.056743
3286Sr8638489.054160
3382Kr8236469.054126
3484Kr8436489.052649
3573Ge7332419.048006
3687Sr8738499.046964
3775As7533429.045093
3880Kr8036449.044984
3977Se7734439.040153
4085Rb8537489.037998
4191Zr9140519.037156
4283Kr8336479.034966
4379Br7935449.034220
4481Br8135469.033979
4592Zr9240529.032783
4646Ti4622249.030532
4747Ti4722259.027336
4844Ca4420249.013793
4942Ca4220228.989116
5038Ar3818208.984870
5145Sc4521248.983945
5243Ca4320238.964551
5334S3416188.951675
5440Ar4018228.947325
5541K4119228.938623
5639K3919208.938174
5737Cl3717208.929760
5836S3616208.923108
5935Cl3517188.900285
6030Si3014168.885761
6132S3216168.884318
6233S3316178.876964
6331P3115168.859744
6428Si2814148.838935
6529Si2914158.826327
6627Al2713148.708242
6726Mg2612148.694981
6824Mg2412128.651911
6925Mg2512138.599047
7023Na2311128.485675
7122Ne2210128.436087
7220Ne2010108.423422
7316O16888.367390
7421Ne2110118.344280
7519F199108.149612
7617O17898.118904
7718O188108.114744
7812C12668.071327
7915N15788.064594
8014N14777.866827
8113C13677.830943
824He4227.465077
8311B11567.283337
8410B10556.866257
85 9Be9456.810483
86 7Li7345.941599
87 6Li6335.723527
88 3He3213.094327
89 2H2111.503327
90 1H1100.782327

Nuclides that are observationally stable and a theoretical decay mode of spontaneous fission

nonuclideAZNenergydecay modedecay energy (MeV)
9194Mo9442529.011856(SF)< 4.485
9293Nb9341529.009051(SF)< 0.943
9396Mo9642548.996229(SF)< 5.771
9495Mo9542538.994564(SF)< 4.531
9597Mo9742558.973806(SF)< 6.226
9698Ru9844548.971572(SF)< 11.690
97100Ru10044568.963517(SF)< 13.634
9899Ru9944558.956348(SF)< 12.368
99102Ru10244588.944837(SF)< 12.049
100101Ru10144578.942117(SF)< 13.205
101104Pd10446588.930847(SF)< 18.969
102103Rh10345588.925910(SF)< 15.462
103106Pd10646608.919460(SF)< 16.806
104105Pd10546598.913356(SF)< 18.247
105108Pd10846628.900253(SF)< 16.102
106107Ag10747608.897514(SF)< 20.512
107110Cd11048628.892718(SF)< 22.486
108109Ag10947628.885300(SF)< 19.241
109112Cd11248648.880077(SF)< 20.733
110111Cd11148638.875445(SF)< 21.883
111114Sn11450648.865722(SF)< 27.965
112113In11349648.862212(SF)< 24.281
113116Sn11650668.860362(SF)< 25.905
114115Sn11550658.854249(SF)< 26.791
115118Sn11850688.848073(SF)< 23.815
116117Sn11750678.843977(SF)< 25.334
117120Sn12050708.830537(SF)< 21.824
118119Sn11950698.828201(SF)< 23.140
119121Sb12151708.811783(SF)< 25.718
120122Te12252708.811606(SF)< 30.974
121124Te12452728.801364(SF)< 28.221
122123Sb12351728.796727(SF)< 23.454
123126Te12652748.786126(SF)< 26.011
124125Te12552738.783505(SF)< 26.966
125128Xe12854748.773359(SF)< 35.047
126127I12753748.771981(SF)< 29.961
127130Xe13054768.762725(SF)< 32.483
128129Xe12954758.758904(SF)< 33.947
129132Xe13254788.747695(SF)< 30.885
130131Xe13154778.746253(SF)< 31.140
131134Ba13456788.735133(SF)< 40.520
132133Cs13355788.733515(SF)< 34.753
133136Ba13656808.724908(SF)< 38.041
134135Ba13556798.722072(SF)< 39.357
135137Ba13756818.711628(SF)< 35.722
136138Ba13856828.710904(SF)< 34.302
137140Ce14058828.700494(SF)< 43.633
138139La13957828.698892(SF)< 38.944
139141Pr14159828.681405(SF)< 48.450
140142Nd14260828.676646(SF)< 53.264
141156Gd15664928.536342(SF)< 71.541
142157Gd15764938.522478(SF)< 70.531
143158Gd15864948.518775(SF)< 70.965
144159Tb15965948.508680(SF)< 74.878
145163Dy16366978.478607(SF)< 79.055
146164Dy16466988.473604(SF)< 79.499

Nuclides that are observationally stable, but have theoretical decay modes other than spontaneous fission

nonuclideAZNenergydecay modedecay energy (MeV)
147 74Se7434409.047175+β+)1.209
148 80Se8034469.043326β)0.134
149 86Kr8636509.039532β)1.256
150 84Sr8438469.031375+β+)1.787
151102Pd10246568.933337+β+)1.172
152104Ru10444608.918337β)1.300
153 36Ar3618188.911105+β+)0.433
154112Sn11250628.862944+β+)1.922
155122Sn12250728.808590β)0.366
156126Xe12654728.779010+β+)0.897
157143Nd14360838.658792(α)0.521
158144Sm14462828.640577+β+)1.781
159146Nd14660868.625649β, α)0.070, 1.182
160150Sm15062888.585043(α)1.449
161152Sm15262908.563227(α)0.220
162153Eu15363908.550893(α)0.274
163154Gd15464908.549985(α)0.081
164155Gd15564918.536341(α)0.081
165158Dy15866928.516973+β+, α)0.283, 0.875
166160Dy16066948.506816(α)0.439
167161Dy16166958.494067(α)0.344
168162Dy16266968.492234(α)0.085
169164Er16468968.473462+β+, α)0.024, 1.304
170165Ho16567988.464689(α)0.139
171166Er16668988.462482(α)0.831
172167Er16768998.450350(α)0.666
173168Er168681008.446308(α)0.553
174169Tm169691008.433931(α)1.200
175170Yb170701008.428792(α)1.738
176171Yb171701018.418182(α)1.559
177172Yb172701028.415864(α)1.310
178173Yb173701038.404023(α)0.946
179174Yb174701048.398624(α)0.740
180175Lu175711048.386589(α)1.620
181176Hf176721048.381427(α)2.255
182177Hf177721058.370139(α)2.245
183178Hf178721068.365958(α)2.083
184179Hf179721078.353293(α)1.806
185180Hf180721088.347930(α)1.283
186181Ta181731088.338961(α)1.526
187185Re185751108.308204(α)2.195
188187Os187761118.291746(α)2.720
189188Os188761128.290138(α)2.143
190189Os189761138.277599(α)1.976
191190Os190761148.275045(α)1.378
192191Ir191771148.263508(α)2.084
193194Pt194781168.250519(α)1.504
194193Ir193771168.250259(α)1.017
195195Pt195781178.239516(α)1.158
196196Pt196781188.237896(α)0.794
197197Au197791188.229404(α)0.954
198198Hg198801188.227663(α)1.383
199199Hg199801198.219805(α)0.824
200200Hg200801208.218848(α)0.718
201201Hg201801218.208956(α)0.334
202202Hg202801228.206703(α)0.136
203203Tl203811228.198230(α)0.911
204204Hg204801248.192358β)0.416
205205Tl205811248.187526(α)0.157
206206Pb206821248.186791(α)1.137
207207Pb207821258.179791(α)0.391

Stable nuclides for which decay has been searched for but not found (only lower bounds known)

nonuclideAZNenergyhalf-life (s)decay modedecay energy (MeV)
208134Xe13454808.728973> 1.83×1030β)0.825
209 54Fe5426289.113040> 9.77×1029+β+)0.680
210 40Ca4020208.942485> 9.47×1028+β+)0.194
211132Ba13256768.741288> 9.47×1028+β+)0.846
212208Pb208821268.175888> 8.20×1028(α)0.519
213 58Ni5828309.109736> 2.21×1028+β+)1.926
214 92Mo9242509.014860> 5.99×1027+β+)1.649
215160Gd16064968.496009> 9.78×1026β)1.729
216184W184741108.319737> 9.15×1026(α)1.656
217186W186741128.299873> 8.52×1026(α)1.123
218183W183741098.324699> 4.10×1026(α)1.680
219182W182741088.336424> 2.62×1026(α)1.772
220114Cd11448668.860985> 2.02×1026β)0.540
221148Nd14860888.594388> 9.47×1025β, α)1.929, 0.599
222196Hg196801168.233710> 7.88×1025+β+, α)0.820, 2.027
223154Sm15462928.541857> 7.25×1025β)1.251
224 50Cr5024269.076517> 4.10×1025+β+)1.167
225108Cd10848608.897735> 3.16×1025+β+)0.272
226156Dy15666908.523443> 3.16×1025+β+, α)2.011, 1.758
227110Pd11046648.874500> 1.89×1025β)2.000
228170Er170681028.424945> 1.01×1025β, α)0.654, 0.050
229142Ce14258848.666666> 8.20×1024β, α)1.417, 1.298
230106Cd10648588.893327> 8.20×1024+β+)2.770
231176Yb176701068.375271> 5.05×1024β, α)1.083, 0.570
232204Pb204821228.194414> 4.42×1024(α)1.972
233 94Zr9440548.999698> 3.47×1024β)1.144
234124Sn12450748.782914> 3.15×1024β)2.287
235123Te12352718.796302> 2.90×1024+)0.052
236 96Ru9644528.967911> 2.11×1024+β+)2.719
237145Nd14560858.632963> 1.89×1024(α)1.578
238192Pt192781148.260353> 1.89×1024(α)2.418
239 64Zn6430349.102634> 8.84×1023+β+)1.096
240120Te12052688.816369> 6.94×1023+β+)1.700
241 70Zn7030409.065109> 4.10×1023β)0.998
242 46Ca4620269.009047> 8.84×1022β)0.988
243149Sm14962878.589058> 6.31×1022(α)1.870
244180mTa180731078.342767> 3.79×1022, ε, α)0.783, 0.929, 2.103
245198Pt198781208.222378> 1.01×1022β, α)1.047, 0.087
246162Er16268948.480852> 4.41×1021+β+, α)1.844, 1.646
247168Yb16870988.437845> 4.10×1021+β+, α)1.422, 1.951
248 98Mo9842568.970426> 3.15×1021β)0.112
249138Ce13858808.705878> 2.84×1021+β+)0.694
250136Ce13658788.707122> 2.21×1021+β+)2.419
251184Os184761088.311850> 1.77×1021+β+, α)1.451, 2.963
252192Os192761168.258202> 3.09×1020β, α)0.413, 0.362

Primordial radioactive nuclides (half-life > 108 years)

nonuclideAZNenergyhalf-life (s)half-life (years)decay modedecay energy (MeV)
253128Te12852768.7432616.94×10312.2×1024ββ0.868
254124Xe12454708.7782645.68×10291.8×1022εε2.864
25578Kr7836429.0223492.90×10299.2×1021εε2.846
256136Xe13654828.7068057.5×10282.38×1021ββ2.462
25776Ge7632449.0346565.642×10281.8×1021ββ2.039
258130Ba13056748.7425743.79×10281.2×1021εε2.620
25982Se8234489.0175963.408×10271.1×1020ββ2.995
260116Cd11648688.8361469.783×10263.1×1019ββ2.809
26148Ca4820288.9924527.258×10262.3×1019ββ4.274
262209Bi209831268.1586896.343×10262.01×1019α3.137
26396Zr9640568.9613596.3×10262.0×1019ββ3.348
264130Te13052788.7665782.777×10268.8×1018ββ2.530
265150Nd15060908.5625942.493×10267.9×1018ββ3.367
266100Mo10042588.9331672.461×10267.8×1018ββ3.035
267151Eu15163888.5657591.578×10265.0×1018α1.964
268180W180741068.3471275.680×10251.8×1018α2.509
26950V5023279.0557594.418×10241.4×1017β+, β2.205, 1.038
270113Cd11348658.8593722.430×10237.7×1015β0.321
271148Sm14862868.6074232.209×10237.0×1015α1.986
272144Nd14460848.6529477.227×10222.29×1015α1.905
273186Os186761108.3025086.312×10222.0×1015α2.823
274174Hf174721028.3922876.312×10222.0×1015α2.497
275115In11549668.8499101.392×10224.4×1014β0.499
276152Gd15264888.5628683.408×10211.1×1014α2.203
277190Pt190781128.2677642.051×10196.5×1011α3.252
278147Sm14762858.6105933.345×10181.06×1011α2.310
279138La13857818.6983203.219×10181.02×1011ε, β1.737, 1.044
28087Rb8737509.0437181.568×10184.97×1010β0.283
281187Re187751128.2917321.300×10184.12×1010β0.0026
282176Lu176711058.3746651.187×10183.764×1010β1.193
283232Th232901427.9185334.434×10171.406×1010α, SF4.083
284238U238921467.8725511.410×10174.471×109α, SF, ββ4.270
28540K4019218.9097073.938×10161.25×109β, ε, β+1.311, 1.505, 1.505
286235U235921437.8971982.222×10167.04×108α, SF4.679

Radionuclides with half-lives of 10000 years to 108 years

nonuclideZNenergyhalf-life (s)half-life (years)decay modenotes
287244Pu941507.8262212.525×10158.0×107α, SFinterstellar[4]
288146Sm62848.6261362.144×10156.8×107α
28992Nb41519.0109801.095×10153.47×107β+, βCG
290236U921447.8914707.391×10142.34×107α, SFDP
291205Pb821238.1872795.459×10141.73×107β+
292129I53768.7573974.955×10141.57×107βCG, FP
293247Cm961517.8060084.923×10141.56×107α
294182Hf721108.3243992.809×10148.90×106β
295107Pd46618.8971972.051×10146.50×106βFP
29697Tc43548.9705031.329×10144.21×106β+
29798Tc43558.9532461.325×10144.20×106β
29853Mn25289.1031751.180×10143.74×106β+CG
299154Dy66888.5284579.467×10133.00×106α
30060Fe26349.0948618.268×10132.62×106βCG[5], interstellar[6]
301210mBi831278.1404739.594×10132.58×106α
302135Cs55808.7200827.258×10132.30×106βFP
303237Np931447.8819896.766×10132.14×106α, SFDP
304150Gd64868.5764545.649×10131.79×106α
30593Zr40539.0080694.828×10131.53×106βFP
30610Be466.8106574.765×10131.51×106βCG
30726Al13138.5409542.263×1013717000β+CG
308242Pu941487.8452181.183×1013375000α, SF
309208Bi831258.1620491.161×1013368000β+
310248Cm961527.7995861.098×1013348000α, SF
31136Cl17198.8913809.499×1012301000β, β+CG, IM
31279Se34459.0323109.309×1012295000βFP
313234U921427.9083087.747×1012245500α, SFDP
314126Sn50768.7540267.258×1012223000βFP
31581Kr36459.0305137.227×1012229000β+CG
31699Tc43568.9533796.662×1012211100βFP, DP
317186mRe751118.2959586.312×1012200000IT
318233U921417.9128735.024×1012159200α, SFDP
319236Np931437.8875144.860×1012154000β+, β, α
32041Ca20218.9283473.219×1012102000β+CG
32159Ni28319.1078632.398×101276000β+
322230Th901407.9371362.379×101275400α, SFDP
323137La57808.7071011.893×101260000β+
324202Pb821208.1997141.657×101252500β+, α
325231Pa911407.9266271.034×101232770α, SFDP
326239Pu941457.8680227.609×101124110α, SFIM, DP
32794Nb41538.9900996.406×101120300βCG

Radionuclides with half-lives of 10 years to 10000 years

nonuclideZNenergyhalf-life (s)half-life (years)decay modenotes
328245Cm961497.8223292.682×10118500α, SF
329250Cm961547.7793712.619×10118300SF, α, β
330243Am951487.8360352.326×10117371α, SF
331229Th901397.9421272.316×10117339αDP
332240Pu941467.8624652.070×10116560α, SFDP
33314C687.8556201.799×1011[7]5701[7]βCG, IM
334246Cm961507.8167811.502×10114760α, SF
335163Ho67968.4785911.442×10114570β+
33693Mo42519.0046931.262×10114000β+
337226Ra881387.9665975.049×10101600αDP
338247Bk971507.8061824.355×10101380α
339166mHo67998.4512733.787×10101200β
340251Cf981537.7759692.834×1010898α, SF
34191Nb41509.0233272.146×1010680β+
342194Hg801148.2372711.401×1010444β+
343108mAg47618.8814391.382×1010437.9β+, IT
344241Am951467.8516761.364×1010432.2α, SFIM
345249Cf981517.7913051.108×1010351.1α, SF
346248Bk971517.796811> 9.47×109>300α
34739Ar18218.9236868.489×109269βCG
348192mIr771158.2518757.605×109241IT
349158Tb65938.5110555.680×109180β+, β
350242mAm951477.8419134.450×109141IT, α, SF
35132Si14188.8238564.166×109132βCG
352209Po841258.1496333.951×109125.2[8]α, β+
35363Ni28359.1112103.159×109101βIM
354151Sm62898.5652512.840×10990.0βFP
355238Pu941447.8773582.768×10987.7α, SFIM, DP
356157Tb65928.5220962.241×10971.0β+
357148Gd64848.5867062.237×10970.9α
358232U921407.9221432.174×10968.9α, SF
35944Ti22228.9247021.893×10959.1β+
360193Pt781158.2499651.578×10950.0β+
361121mSn50718.8084991.385×10943.89IT, β
362150Eu63878.5699741.164×10936.89β+
36342Ar18248.8909231.038×10932.9β
364207Bi831248.1682091.038×10931.6β+
365178m2Hf721069.776×10831IT
366137Cs55828.7030479.477×10830.1βFP, IM
367243Cm961477.8360049.183×10829.1α, β+, SF
36890Sr38529.0262399.120×10828.9βFP, IM
369210Pb821288.1414627.006×10822.2β, αDP, IM
370227Ac891387.9574476.871×10821.77β, αDP
371244Cm961487.8317635.712×10818.1α, SF
372145Pm61848.6318385.586×10817.7β+, α
37393mNb41525.084×10816.1IT
374241Pu941477.8515904.510×10814.3β, α, SF
375113mCd48654.380×10813.9β, ITFP
376152Eu63898.5508974.262×10813.51β+, β
377250Cf981527.7866404.128×10813.08α, SF
3783H123.0879943.888×10812.32βCG, IM
37985Kr36499.0299193.384×10810.72βFP, IM
380133Ba56778.7296243.319×10810.52β+

Radionuclides with half-lives of 1 day to 10 years

nonuclideZNenergyhalf-life (s)half-lifedecay modenotes
381154Eu63918.5372002.711×1088.60 yβ, β+
382194Os761188.2385081.893×1086.0 yβ
383228Ra881407.9443901.815×1085.75 yβDP
384146Pm61858.6155741.745×1085.53 yβ+, β
38560Co27339.0988111.663×1085.27 yβIM
386155Eu63928.5347111.500×1084.75 yβFP
387204Tl811238.1906711.193×1083.78 yβ, β+IM
388174Lu711038.3907261.045×1083.31 yβ+
389101Rh45568.9367531.041×1083.3 yβ+
390102mRh45578.9206809.152×1072.9 yβ+, IT
391208Po841248.1553159.145×1072.898 yα, β+
392236Pu941427.8895369.019×1072.858 yα, SF
393125Sb51748.7773678.705×1072.759 yβFP
39455Fe26299.1164078.637×1072.737 yβ+
395252Cf981547.7696058.347×1072.645 yα, SFIM
396147Pm61868.6090688.279×1072.624 yβFP, DP
39722Na11118.3068918.213×1072.603 yβ+CG
398134Cs55798.7197686.517×1072.065 yβ, β+FP
399171Tm691028.4176206.059×1071.92 yβ
400228Th901387.9539066.033×1071.912 yαDP
401172Hf721008.3992525.901×1071.87 yβ+
402179Ta731068.3527035.743×1071.82 yβ+
403173Lu711028.4001474.323×1071.37 yβ+
404252Es991537.7646214.075×1071.291 yα, β+, β
405109Cd48618.8833273.986×1071.263 yβ+
406235Np931427.8966693.422×1071.084 yβ+, α
407106Ru44628.8856863.228×1071.023 yβFP
408144Pm61838.6367513.136×107363 dβ+
409145Sm62838.6275902.938×107340 dβ+
410248Cf981507.8001982.881×107333.4 dα, SF
411249Bk971527.7908052.851×107330 dβ, α, SF
41249V23269.0500402.843×107329.1 dβ+
41354Mn25299.1001312.697×107312.2 dβ+, βIM
414119m1Sn50692.534×107293.1 dIT
415144Ce58868.6299182.462×107285 dβFP
416254Es991557.7485242.382×107275.7 dα, β, SF, β+
41757Co27309.1124542.348×107271.8 dβ+IM
41868Ge32369.0563272.341×107271 dβ+IM
419143Pm61828.6515092.290×107265 dβ+
420110mAg47638.8653552.158×107249.8 dβ, IT
42165Zn30359.0853522.105×107243.6 dβ+IM
422153Gd64898.5477312.077×107240.4 dβ+IM
423102Rh45571.788×107207 dβ+, β
424195Au791168.2383531.608×107186.1 dβ+
425194mIr771178.2380251.477×107170.9 dβ
426184mRe751098.3106701.460×107169 dIT, β+
427242Cm961467.8448601.407×107162.8 dα, SF
42845Ca20258.9782611.405×107162.6 dβ
429177mLu711068.3618291.386×107160.4 dβ, IT
430121mTe52698.8007491.331×107154.1 dIT, β+
431159Dy66938.5063781.248×107144.4 dβ+
432174m1Lu711031.227×107142 dIT, EC
433210Po841268.1472951.196×107138.4 dαDP
434139Ce58818.6968811.189×107137.6 dβ+
435123Sn50738.7853111.116×107129.2 dβ
436170Tm691018.4230961.111×107128.6 dβ, β+
437151Gd64878.5626851.071×107124 dβ+, α
438181W741078.3379241.047×107121.2 dβ+
43975Se34419.0335811.035×107119.8 dβ+IM
440123mTe52711.03×107119.2 dIT
441113Sn50638.8530359.944×106115.1 dβ+
442182Ta731098.3264569.887×106114.4 dβ
443127mTe52758.7657599.418×106109 dIT
44488Y39499.0292729.212×106106.6 dβ+
445257Fm1001577.7266198.683×106100.5 dα, SF
446185Os761098.3027308.087×10693.6 dβ+
447168Tm69998.4363168.044×10693.1 dβ+, β
448149Eu63868.5843958.044×10693.1 dβ+
44997mTc43547.862×10691 dIT
45035S16198.8955107.561×10687.51 dβCG
45183Rb37469.0240387.448×10686.2 dβ+
45246Sc21258.9790917.239×10683.78 dβ
45388Zr40489.0215897.206×10683.4 dβ+
45473As33409.0433416.938×10680.3 dβ+
45556Co27299.0720316.673×10677.23 dβ+
456185W741118.3058666.489×10675.1 dβ
457192Ir771156.379×10673.827 dβIM
458160Tb65958.4953466.247×10672.3 dβ
45958Co27319.1031536.122×10670.86 dβ+
460183Re751088.3216616.048×10670 dβ+
461175Hf721038.3826656.048×10670 dβ+
462188W741148.2770036.029×10669.78 dβ
46385Sr38479.0254805.602×10664.84 dβ+
46495Zr40558.9729895.532×10664.03 dβFP
46595mTc43528.9763595.270×10661 dβ+, IT
46691mNb41505.258×10660.86 dIT,ε
467254Cf981567.7510875.227×10660.5 dSF, α
468124Sb51738.7779435.194×10660.12 dβ
469125I53728.7820195.132×10659.4 dβ+IM
47091Y39529.0201745.055×10658.51 dβFP
471125mTe52734.959×10657.4 dIT
472148Eu63858.5868824.709×10654.5 dβ+, α
4737Be435.8184704.598×10653.22 dβ+CG
474258Md1011577.7159484.450×10651.5 dα, SF
47589Sr38519.0399694.369×10650.57 dβFP, IM
476114mIn49658.8466084.278×10649.51 dIT, β+
477146Gd64828.5925124.171×10648.28 dβ+
478203Hg801238.1958064.026×10646.6 dβ
479237Pu941437.8810603.905×10645.2 dβ+, α
480115mCd48678.8357543.850×10644.56 dβ
48159Fe26339.0995163.844×10644.49 dβIM
482181Hf721098.3332723.662×10642.38 dβ
483148mPm61878.5898003.567×10641.28 dβ, IT
484105Ag47588.9005473.567×10641.28 dβ+
485255Es991567.7415673.439×10639.8 dβ, α, SF
486103Ru44598.9185003.392×10639.26 dβFP
487127Xe54738.7667683.145×10636.4 dβ+
488184Re751093.059×10635.4 dβ+
48995Nb41548.9848213.023×10634.99 dβFP
49037Ar18198.9077523.020×10634.95 dβ+CG
491129mTe52778.7449532.903×10633.6 dIT, β
49284Rb37479.0207322.860×10633.1 dβ+, β
493241Cm961457.8484922.834×10632.8 dβ+, α
494141Ce58838.6772862.809×10632.51 dβFP
495169Yb70998.4285462.767×10632.03 dβ+IM
496260Md1011597.6997892.748×10631.81 dSF, α, β+, β
49751Cr24279.0801272.393×10627.7 dβ+IM
498240Cm961447.8558052.333×10627 dα, β+, SF
499233Pa911427.9104262.331×10626.98 dβDP
50082Sr38448.9982542.208×10625.56 dβ+IM
50133P15188.8694342.189×10625.34 dβ
502179m2Hf721072.164×10625.05 dIT
503234Th901447.8977632.082×10624.1 dβDP
504147Eu63848.5988792.082×10624.1 dβ+, α
505178W741048.3545631.866×10621.6 dβ+
506230U921387.9338711.797×10620.8 dα, SF
507253Es991547.7590191.769×10620.5 dα, SF
508121Te52691.656×10619.2 dε
509227Th901377.9576441.614×10618.7 dαDP
51086Rb37499.0335021.611×10618.6 dβ, β+
511253Cf981557.7578851.539×10617.8 dβ, α
51274As33419.0288951.535×10617.8 dβ+, β
513230Pa911397.9314361.503×10617.4 dβ+, β, α
514103Pd46578.9206381.468×10617.0 dβ+IM
51599Rh45548.9357111.391×10616.1 dβ+
51648V23258.9978901.380×10615.97 dβ+
517191Os761158.2618701.331×10615.41 dβ
518205Bi831228.1740691.323×10615.31 dβ+
519156Eu63938.5206421.312×10615.19 dβ
520225Ra881377.9735761.287×10614.9 dβDP
52132P15178.8308651.232×10614.26 dβCG, IM
522117mSn50671.21×10614 dIT
523143Pr59848.6522581.172×10613.56 dβ
524189Ir771128.2747831.140×10613.19 dβ+
525136Cs55818.7061711.127×10613.04 dβ
526126I53738.7690261.117×10612.93 dβ+, β
527140Ba56848.6661201.102×10612.75 dβFP
528126Sb51758.7570421.067×10612.35 dβ
529202Tl811218.1999561.057×10612.23 dβ+
530131mXe54771.023×10611.84 dIT
531190Ir771138.2647551.018×10611.78 dβ+
532131Ba56758.7330379.936×10511.5 dβ+
533223Ra881357.9940429.876×10511.43 dαDP, IM
53471Ge32399.0559439.876×10511.43 dβ+
535147Nd60878.6029739.487×10510.98 dβ
536246Pu941527.8054949.366×10510.84 dβ
537193mIr771169.098×10510.53 dIT
538188Pt781108.2725148.813×10510.2 dβ+, α
53992mNb41518.770×10510.15 dβ+, α
540225Ac891367.9751598.571×1059.92 dαDP
541131Cs55768.7435418.371×1059.69 dβ+IM
542125Sn50758.7585158.329×1059.64 dβ
543169Er681018.4318528.115×1059.39 dβIM
544149Gd64858.5755768.018×1059.28 dβ+, α
545167Tm69988.4458667.992×1059.25 dβ+
546129mXe54757.672×1058.88 dIT
547206Po841228.1595907.603×1058.80 dβ+, α
54872Se34389.0143007.258×1058.40 dβ+
549106mAg47598.8906397.154×1058.28 dβ+
550171Lu711008.4095327.119×1058.24 dβ+
551131I53788.7388426.930×1058.02 dβFP, IM
552257Es991587.7234686.653×1057.7 dβ, SF
553111Ag47648.8661116.437×1057.45 dβ
554161Tb65968.4903835.967×1056.91 dβ
555237U921457.8798005.832×1056.75 dβDP
556172Lu711018.4012175.789×1056.70 dβ+IM
557177Lu711065.743×1056.65 dβ
558132Cs55778.7315995.599×1056.48 dβ+, β
559206Bi831238.1685515.394×1056.24 dβ+
560196Au791178.2302055.328×1055.17 dβ+, β
56156Ni28289.0338995.249×1056.08 dβ+
562118Te52668.8147265.184×1056 dβ+
563145Eu63828.6092455.124×1055.93 dβ+
564120mSb51698.8081944.977×1055.76 dβ+
56552Mn25279.0464314.831×1055.59 dβ+
566148Pm61874.638×1055.37 dβ
567156Tb65918.5206674.622×1055.35 dβ+
568155Tb65908.5310314.596×1055.32 dβ+
569133Xe54798.7303024.530×1055.24 dβIM
570183Ta731108.3188474.406×1055.10 dβ
571210Bi831274.330×1055.01 dβ, αDP
572245Bk971487.8190204.268×1054.94 dβ+, α
573119mTe52678.8017734.061×1054.7 dβ+, IT
574146Eu63838.5995603.983×1054.61 dβ+
57547Ca20278.9721813.919×1054.54 dβ
576234Np931417.9005713.802×1054.4 dβ+
577101mRh45563.74×1054.34 dε, IT
578193mPt781153.74×1054.33 dIT
57996Tc43538.9652553.698×1054.28 dβ+
580231U921397.9249773.629×1054.2 dβ+, α
581175Yb701058.3839023.616×1054.19 dβ
582124I53718.7758843.608×1054.18 dβ+IM
583195mPt781173.46×1054.01 dIT
584127Sb51768.7540053.326×1053.85 dβ
585222Rn861367.9975733.304×1053.82 dαDP
586186Re751113.21×1053.72 dβ−,eIM
587224Ra881367.9872773.138×1053.63 dαDP
588100Pd46548.9235873.136×1053.63 dβ+
58995mNb41543.11×1053.61 dIT, β−
590166Dy661008.4483762.938×1053.4 dβ
591140Nd60808.6731132.912×1053.37 dβ+
59247Sc21269.0145642.894×1053.35 dβ
59387Y39489.0255652.873×1053.33 dβ+
59489Zr40499.0249122.823×1053.27 dβ+
59567Ga31369.0695322.819×1053.26 dβ+IM
596132Te52808.7166462.768×1053.2 dβFP
597134Ce58768.7044322.730×1053.16 dβ+
598199Au791208.2175342.712×1053.14 dβ
599201Tl811208.2065612.625×1053.04 dβ+IM
600253Fm1001537.7576912.592×1053. dβ+, α
601191Pt781138.2582282.473×1052.86 dβ+
602111In49628.8676882.423×1052.8 dβ+IM
60397Ru44538.9590802.411×1052.79 dβ+
60499Mo42578.9396692.375×1052.75 dβFP, IM
605122Sb51718.7953462.353×1052.72 dβ, β+
60671As33389.0275812.350×1052.72 dβ+
607198Au791198.2207322.329×1052.7 dβIM
608197Hg801178.2263582.309×1052.67 dβ+
60990Y39519.0322942.306×1052.67 dβIM
610182Re751078.3210532.304×1052.67 dβ+
611172Tm691038.4049322.290×1052.65 dβ
61267Cu29389.0760862.226×1052.58 dβIM
61344mSc21238.9246272.110×1052.44 dIT, β+
614128Ba56728.7385232.100×1052.43 dβ+
61577Br35429.0224312.053×1052.38 dβ+
616166Yb70968.4423402.041×1052.36 dβ+
617177Ta731048.3635532.036×1052.36 dβ+
618239Np931467.8649992.036×1052.36 dβDP
619153Tb65888.5374712.022×1052.34 dβ+
62066Ni28389.0714231.966×1052.28 dβ
621247Pu941537.7919751.961×1052.27 dβ
622198m2Au791191.96×1052.27 dIT
623115Cd48671.92×1052.23 dβ−
624149Pm61888.5818711.911×1052.21 dβ
625133mXe54791.89×1052.20 dIT
626203Pb821218.1934311.869×1052.16 dβ+
627238Np931457.8719311.829×1052.12 dβ
628240Am951457.8566941.829×1052.12 dβ+, α
629172Er681048.3997521.775×1052.05 dβ
630170Lu71998.4084451.738×1052.01 dβ+
63172Zn30429.0175911.674×1051.94 dβ
632153Sm62918.5456141.666×1051.93 dβIM
633202Pt781248.1832091.584×1051.83 dβ
63448Sc21278.9983271.572×1051.82 dβ
635246Bk971497.8112871.555×1051.8 dβ+, α
636195mHg801158.2293991.498×1051.73 dIT, β+
637188Ir771118.2752001.494×1051.73 dβ+
638140La57838.6736201.450×1051.68 dβ
639254mEs991551.41×1051.64 dβ−, IT, α, EC, SF
64069Ge32379.0438001.406×1051.63 dβ+
641133mBa56771.4×1051.62 dIT,e
64277As33449.0312831.398×1051.62 dβ
643119Sb51688.8232351.375×1051.59 dβ+
644147Gd64838.5840011.370×1051.59 dβ+
645194Au791158.2376261.369×1051.58 dβ+
646229Pa911387.9407691.296×1051.5 dβ+, α
647246Cf981487.8107921.285×1051.49 dα, β+, SF
64857Ni28299.0552221.282×1051.48 dβ+
649105Rh45608.9079561.273×1051.47 dβFP
65082Br35479.0164071.270×1051.47 dβ
65179Kr36439.0136441.261×1051.46 dβ+
652137mCe58798.6963271.238×1051.43 dIT, β+
653169Lu71988.4149781.226×1051.42 dβ+
654143Ce58858.6420411.189×1051.38 dβ
655251Es991527.7744671.188×1051.38 dβ+, α
65683Sr38458.9965681.167×1051.35 dβ+
657129Cs55748.7496221.154×1051.34 dβ+
658268Db1051637.6351331.152×1051.33 dSF, EC
659232Pa911417.9163791.132×1051.31 dβ, β+
660193Os761178.2443481.084×1051.25 dβ
661165Tm69968.4527581.082×1051.25 dβ+
662131mTe52798.7203921.080×1051.25 dβ, IT
663226Ac891377.9637611.057×1051.22 dβ, β+, α
664160Er68928.4841901.029×1051.19 dβ+
665151Pm61908.5573871.022×1051.18 dβ
666135mBa56791.01×1051.17 dIT
667121Sn50719.73×1041.13 dβ−
668166Ho67999.65×1041.12 dβ−IM
66976As33439.0225059.454×1041.09 dβ
670200Tl811198.2065679.396×1041.09 dβ+
67172As33399.0189669.360×1041.08 dβ+
672231Th901417.9249329.187×1041.06 dβ, αDP
673252Fm1001527.7664989.140×1041.06 dα, SF
674252Cm961567.7574398.99×104[9]1.04 dβ
675156mTb65918.78×1041.02 dIT
676189Re751148.2722698.748×1041.01 dβ

Radionuclides with half-lives of 1 hour to 1 day

nonuclideZNenergyhalf-life (s)half-life (hour)decay modenotes
677197mHg801178.568×10423.8IT
678187W741138.2847228.539×10423.7β
679248mBk971518.532×10423.7β, EC (30)
680173Hf721018.3916178.496×10423.6β+
68196Nb41558.9630368.406×10423.4β
682154m2Tb65898.5269128.172×10422.7β+, IT (1.8)
683236mNp931438.1×10422.5EC, β (50)
68443K19248.9223278.028×10422.3β
685182Os761068.3164327.956×10422.1β+
686228Pa911377.9444687.920×10422.0β+, α (2)
68748Cr24248.9633907.762×10421.6β+
688154Tb65897.74×10421.5β+, β (<0.1)
689200Pb821188.2025427.740×10421.5β+
690112Pd46668.8421857.571×10421.0β
69128Mg12168.6077067.529×10420.9βCG
692100Rh45558.9271677.488×10420.8β+
693133I53808.7170947.488×10420.8β
694122Xe54688.7709597.236×10420.1β+
695255Fm1001557.7427047.225×10420.1α, SF (tr)
69695Tc43527.2×10420.0β+
697181Re751068.3282947.164×10419.9β+
698197Pt781198.2257567.161×10419.9β
699135La57788.7131797.020×10419.5β+
700194Ir771176.941×10419.3β
701142Pr59838.6614176.883×10419.1β,EC (tr)
702200mAu791218.2028776.732×10418.7β, IT (18)
703159Gd64958.5025766.652×10418.5β
704135Ce58778.6981796.372×10417.7β+
705193Au791148.2443536.354×10417.7β+
706151Tb65868.5456926.339×10417.6β+, α (tr)
70755Co27289.0536476.311×10417.5β+
708152Tb65878.5365916.300×10417.5β+, α (tr)
709188Re751138.2788606.121×10417.0βIM
710125Xe54718.7688646.084×10416.9β+
71197Zr40578.9264516.028×10416.7β
712186Ir771098.2819355.990×10416.6β+
71386Zr40468.9759795.940×10416.5β+
71476Br35418.9961835.832×10416.2β+
715119Te52675.778×10416.1EC, e+ (2.1)
716242Am951475.767×10416.0β, EC (17)
717170Hf72988.4022105.764×10416.0β+
718157Eu63948.5137925.465×10415.2β
71924Na11138.4220825.382×10415.0βCG, IM
72076Kr36408.9794065.328×10414.8β+
72186Y39478.9932345.306×10414.7β+
722211Rn861258.1128255.256×10414.6β+, α (27)
72390Nb41498.9897275.256×10414.6β+
724185Ir771088.2893825.184×10414.4β+
725240U921487.8516825.076×10414.1βDP
72672Ga31419.0239585.074×10414.1β
72769mZn30399.0565364.954×10413.8IT, β (tr)
728109Pd46638.8750614.932×10413.7β
72987mY39484.813×10413.4IT, β+ (1.6)
730123I53708.7863114.760×10413.2β+IM
731191mOs761154.716×10413.1IT
732183Os761078.3099074.680×10413.0β+
733150mEu63874.608×10412.8β, β+(11)
73464Cu29359.0935814.572×10412.7β+, β (38)IM
735182mRe751074.572×10412.7β+
736200Pt781228.2043424.500×10412.5β
737130I53778.7400354.450×10412.4β
73842K19238.9051754.436×10412.3βIM
739171Hf72998.3954804.356×10412.1β+
740239Am951447.8646664.284×10411.9β+, α (0.01)
741193mHg801138.2314834.248×10411.8β+, IT (7.2)
742203Bi831208.1774364.234×10411.8β+
74377Ge32458.9961854.068×10411.3β
744204Bi831218.1726514.039×10411.2β+
745189Pt781118.2643593.913×10410.9β+
746212Pb821308.1069283.830×10410.6βDP, IM
747195Hg801153.791×10410.5β+
748175Ta731028.3708133.780×10410.5β+
749245Pu941517.8137523.780×10410.5β
750187Ir771108.2837133.780×10410.5β+
751165Er68978.4624063.730×10410.4β+
75293Y39548.9769513.665×10410.2β
753244Am951497.8259143.636×10410.1β
754266Lr1031633.600×10410.0SF
755154m1Tb65893.598×1049.99β+, IT(22)
756183mOs761073.564×1049.90β+, IT(15)
757155Dy66898.5175213.564×1049.90β+
75891Sr38538.9905033.467×1049.63β
759196m2Au791173.456×1049.60IT
76066Ga31359.0368433.416×1049.49β+
761156Sm62948.5160073.384×1049.40β
762127Te52753.366×1049.35β
763201Pb821198.1969893.359×1049.33β+
764152mEu63893.352×1049.31β, β+(28)
76562Zn30329.0579573.307×1049.19β+
766135Xe54818.7114533.290×1049.14β
76758mCo27313.276×1049.10IT
768128Sb51778.7323433.244×1049.01β
769137Ce58793.24×1049.00β+
770234Pu941407.8988923.168×1048.80β+, α (~6)
771184Ta731118.3041543.132×1048.70β
772250Es991517.7784073.096×1048.60β+, α (<3)
773101Pd46558.9171493.049×1048.47β+
77452Fe26269.0007892.979×1048.28β+
775173Tm691048.3965242.966×1048.24β
776180Ta731072.935×1048.15EC, β (14)
777157Dy66918.5135442.930×1048.14β+
778210At851258.1283372.916×1048.10β+, α (0.2)
779176Ta731038.3632022.912×1048.09β+
780166Tm69978.4441832.772×1047.70β+
781256mEs991577.7307422.736×1047.60β
782171Er681038.4089012.706×1047.52β
783199Tl811188.2123332.671×1047.42β+
784211At851268.1265272.597×1047.21β+, α (42)
78573Se34399.0058212.574×1047.15β+
78693mMo42512.466×1046.85IT, β+ (0.1)
787234Pa911437.8989302.412×1046.70βDP
788135I53828.6919942.365×1046.57β
789107Cd48598.8842712.340×1046.50β+
79082mRb37458.9996082.330×1046.47β+, IT (<0.3)
791153Dy66878.5232882.304×1046.40β+, α (tr)
792127Cs55728.7503832.250×1046.25β+
793228Ac891397.9445912.214×1046.15βDP
79499mTc43562.162×1046.01IT, β (tr)IM
795145Pr59868.6205142.154×1045.98β
796189mOs761132.092×1045.81IT
797207Po841238.1541582.088×1045.80β+, α (0.02)
79890Mo42488.9620722.002×1045.56β+
799257Md1011567.7250401.987×1045.52EC, α (15), SF (tr)
800111mPd46658.8445891.980×1045.50IT, β (27)
801139mNd60798.6595291.980×1045.50β+, IT (12)
802180mHf721081.969×1045.47IT, β (0.3)
803209At851248.1329541.948×1045.41β+, α (4.1)
804113Ag47668.8415311.933×1045.37β
805156m2Tb65911.908×1045.30IT (?), β+ (?)
806198Tl811178.2101661.908×1045.30β+
807251Fm1001517.7685901.908×1045.30β+, α (1.8)
808138Nd60788.6656611.814×1045.04β+
809160mHo67938.4858771.807×1045.02IT, β+ (27)
810118mSb51678.8149631.800×1045.00β+
811243Pu941497.8336481.784×1044.96β
812192Au791138.2420361.778×1044.94β+
813110In49618.8574641.764×1044.90β+
814133mCe58758.6907711.764×1044.90β+
81594Tc43518.9665831.758×1044.88β+
81685mY39468.9868801.750×1044.86β+, IT (tr)
81773Ga31429.0261121.750×1044.86β
818192Hg801128.2380511.746×1044.85β+
819132La57758.7057211.728×1044.80β+
82099mRh45541.692×1044.70β+, IT (<0.16)
821267Db1051627.6443611.656×1044.60SF
822179Lu711088.3454281.652×1044.59β
82381Rb37449.0028711.645×1044.57β+IM
824243Bk971467.8298011.620×1044.50β+, α (~0.15)
825115mIn49661.615×1044.49IT, β (5.0)
82685mKr36491.613×1044.48β, IT (21)
827105Ru44618.8896891.598×1044.44β
82880mBr35459.0188721.591×1044.42IT
829139Pr59808.6815651.588×1044.41β+
830129Sb51788.7273581.584×1044.40β
831244Bk971477.8224911.566×1044.35β+, α (tr)
832109In49608.8648051.512×1044.20β+
833184Hf721128.2968711.483×1044.12β
834149Tb65848.5511661.482×1044.12β+, α (17)
835110Sn50608.8517271.480×1044.11β+
83644Sc21231.429×1043.97β+
83771mZn30419.0173701.426×1043.96β, IT (tr)
838141La57848.6595401.411×1043.92β
839133La57768.7141091.408×1043.91β+
84043Sc21228.9129071.401×1043.89β+
841195mIr771188.2333261.368×1043.80β, IT (5)
842193Hg801131.368×1043.80β+
843176mLu711051.319×1043.66β, EC (0.1)
844262Lr1031597.6815561.296×1043.60SF, β+, α
845202mPb821201.274×1043.54IT, β+ (9.5)
84692Y39538.9932081.274×1043.54β
847204Po841208.1612001.271×1043.53β+, α (0.7)
848132Ce58748.6961311.264×1043.51β+
849150Tb65858.5453941.253×1043.48β+, α (tr)
850117mCd48698.8088401.210×1043.36β
85161Cu29329.0874521.200×1043.33β+
852209Pb821278.1556071.171×1043.25βDP
853254Fm1001547.7528081.166×1043.24α, SF (0.06)
854250Bk971537.7795231.156×1043.21β
855161Er68938.4763521.156×1043.21β+
856190mRe751158.2574331.152×1043.20β (54), IT
85790mY39511.148×1043.19IT, β (tr)
858191Au791128.2483431.145×1043.18β+
859173Ta731008.3742181.130×1043.14β+
860112Ag47658.8447561.127×1043.13β
861247Cf981497.8035661.120×1043.11β+, α (0.04)
862184Ir771078.2865991.112×1043.09β+
863190m3Ir771131.111×1043.09β+, IT (8.6)
86445Ti22238.9381211.109×1043.08β+
865167Ho671008.4443041.081×1043.00β
866134Sm62721.048×1042.91IT
867239Cm961437.8571431.044×1042.90β+, α (tr)
868197Tl811168.2151901.022×1042.84β+
86988Kr36528.9769181.022×1042.84β
87038S16228.7781961.022×1042.84β
87187mSr38491.013×1042.82IT, EC (0.3)
872117Sb51668.8289771.008×1042.80β+
873224Ac891357.9809931.001×1042.78β+, α (9.4), β(<1.6)
87493Tc43508.9702749.900×1032.75β+
87585Y39469.648×1032.68β+
876150Pm61898.5620149.648×1032.68β
87792Sr38548.9720679.576×1032.66β
878256Fm1001567.7373989.456×1032.63SF, α (8.1)
87931Si14178.8116189.438×1032.62βCG
88056Mn25319.0875729.284×1032.58β
88165Ni28379.0732679.062×1032.52β
882195Ir771189×1032.50β
883176W741028.3590559.000×1032.50β+
884117Cd48698.964×1032.49β
885116Te52648.8064148.964×1032.49β+
886141Nd60818.6684768.964×1032.49β+
887161Ho67948.4887378.928×1032.48β+
888210Rn861248.1170328.640×1032.40α (96), β+
889198Pb821168.2028938.640×1032.40β+
890238Cm961427.8637648.640×1032.40β+, α
89183Br35489.0232438.640×1032.40β
892152Dy66868.5326708.568×1032.38β+, α (0.1)IM
893178mTa731058.3550758.496×1032.36β+
894187Pt781098.2676388.460×1032.35β+
895165Dy66998.4568918.402×1032.33β
896267Rf1041637.6473578.280×1032.30SF
897132I53798.7205708.262×1032.30β
898158Er68908.4846198.244×1032.29β+
89966Ge32349.0049648.136×1032.26β+
900129Ba56738.7307468.028×1032.23β+
901150Sm62887.992×1032.22β+, α (tr?)
902177W741038.3521187.920×1032.20β+
903106mRh45618.8847617.860×1032.18β
904129mBa56737.776×1032.16β+, IT (tr?)
905138mPr59798.6710887.632×1032.12β+
906121I53688.7844437.632×1032.12β+
907127Sn50778.7288007.560×1032.10β
908123Xe54698.7644097.488×1032.08β+
909186Pt781088.2748977.488×1032.08β+, α (tr)
910245Am951507.8186747.380×1032.05β
91189Nb41488.9775077.308×1032.03β+
912195mOs761197.2×1032.00β, IT (?)
913117mIn49688.8288496.972×1031.94β, IT (47)
914186mIr771096.912×1031.92β+, IT (~25)
915177Yb701078.3594016.880×1031.91β
916198mTl811176.732×1031.87β+, IT (44)
917196Tl811158.2116186.624×1031.84β+
91883m2Kr36476.588×1031.83IT
91918F998.0227896.585×1031.83β+CG,IM
92041Ar18238.8778526.577×1031.83βCG
921163Tm69948.4562056.516×1031.81β+
922239Pa911487.8481486.480×1031.80β
923201Bi831188.1778756.480×1031.80β+, α
924207At851228.1353036.480×1031.80β+, α (~10)
925224Rn861387.9713276.420×1031.78β
92680Sr38428.9501776.378×1031.77β+
927181Os761058.3119356.300×1031.75β+
928205Po841218.1567376.264×1031.74β+, α (0.04)
929149Nd60898.5705296.221×1031.73β
930202Bi831198.1739666.192×1031.72β+, α (tr)
931249Es991507.7854646.132×1031.70β+~, α (0.6)
932147Tb65828.5526346.120×1031.70β+
93387Zr40478.9833736.048×1031.68β+
934126Ba56708.7274396.000×1031.67β+
935113mIn49645.968×1031.66IT
93661Co27349.1024495.940×1031.65β
93795Ru44518.9497495.915×1031.64β+
938238Am951437.8678825.880×1031.63β+(tr)
939208At851238.1313765.868×1031.63β+, α (0.6)
940133Ce58755.82×1031.62β+
94175Br35408.9931815.802×1031.61β+
942152m5Eu63895.76×1031.60IT
943259Md1011587.7098605.760×1031.60SF, α (<1.3)
944197mPt781195.725×1031.59IT, β (3.3)
945230Ra881427.9212495.580×1031.55β
946142La57858.6349545.466×1031.52β
94778As33459.0048795.442×1031.51β
948199Pb821178.1981115.400×1031.50β+
94978Ge32468.9926355.280×1031.47β
950255Cf981577.7387395.100×1031.42β
951196mTl811155.076×1031.41β+, IT (3.8)
952196mIr771198.2194405.040×1031.40β, IT (<0.3)
953132mI53794.993×1031.39IT, β (14)
954139Ba56838.6822174.984×1031.38β
95575Ge32439.0294134.967×1031.38β
956120I53678.7695774.896×1031.36β+
957266Db1051614.8×1031.33α ?, SF ?, β+ ?
958256Md1011557.7290624.620×1031.28β+, α (9.2), SF (<3)
959137Pr59788.6784594.608×1031.28β+
96087Kr36518.9990224.578×1031.27β
961164Yb70948.4434194.548×1031.26β+
962163Er68958.4711684.500×1031.25β+
96377Kr36418.9826184.464×1031.24β+
964178Yb701088.3505304.440×1031.23β
965237Am951427.8748304.380×1031.22β+(0.03)
966142Sm62808.6276164.349×1031.21β+
96797Nb41568.9538644.326×1031.20β
968185Pt781078.2695984.254×1031.18β+
969195Tl811148.2157124.176×1031.16β+
970129Te52774.176×1031.16β
971104Ag47578.8897024.152×1031.15β+
972110mIn49614.146×1031.15β+
973174Ta731018.3686844.104×1031.14β+
97468Ga31379.0578884.063×1031.13β+IM
97585mSr38474.058×1031.13IT, β+ (13)
976190mIr771134.032×1031.12IT
977162mHo67958.4783714.020×1031.12IT, β+ (38)
978204m2Pb821224.016×1031.12IT
97989mNb41483.96×1031.10β+
980103Ag47568.8945413.942×1031.10β+
981249Cm961537.7871913.849×1031.07β
982183Hf721118.3078853.841×1031.07β
983229Ac891407.9370483.762×1031.05β
984117Te52658.7986523.720×1031.03β+
985240Np931477.8533483.714×1031.03βDP
986182mHf721103.69×1031.03β, IT (46)
987212Bi831298.1096173.633×1031.01β(36)DP
988116mSb51658.8164833.618×1031.01β+
989148Tb65838.5479493.600×1031.00β+

Radionuclides with half-lives of 1 minute to 1 hour

Radionuclides with half-lives of 1 second to 1 minute

Radionuclides with half-lives less than 1 second

See also

Sources

Almost all data are taken from reference.[10] For more recent updates, see reference.[11] These sources do not indicate whether certain heavy isotopes starting from Lr, Rf, Db, ... (etc.) were produced, observed, or only predicted from estimated data.

References

  1. Thoennessen, M. (2 April 2019). "Discovery of Nuclides Project". Retrieved 26 April 2019.
  2. Two further nuclides, plutonium-244 and samarium-146, have half-lives just long enough (80 and 68 million years) that they could have survived from the formation of the solar system and be present on earth in trace quantities (having survived 57 and 67 half-lives). They have previously been considered primordial, but recent studies failed to find any evidence of them on Earth.
  3. primarily sourced from https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-medicine.aspx and https://world-nuclear.org/information-library/non-power-nuclear-applications/radioisotopes-research/radioisotopes-in-industry.aspx accessed 30 June 2016
  4. Wallner, A.; Faestermann, T.; Feige, J.; Feldstein, C.; Knie, K.; Korschinek, G.; Kutschera, W.; Ofan, A.; Paul, M.; Quinto, F.; Rugel, G.; Steier, P. (2015). "Abundance of live 244Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis". Nature Communications. 6: 5956. arXiv:1509.08054. Bibcode:2015NatCo...6E5956W. doi:10.1038/ncomms6956. ISSN 2041-1723.
  5. Cosmogenic Iron-60 In Iron Meteorites: Measurements By Low-Level Counting.
  6. Interstellar 60Fe detected on Earth - but where is the r-process nuclide 244Pu?
  7. Other sources give the half-life of 14C as 5730ears (=1.808×1011 seconds)
  8. Boutin, Chad. "Polonium's Most Stable Isotope Gets Revised Half-Life Measurement". nist.gov. NIST Tech Beat. Retrieved 9 September 2014.
  9. half-life poorly determined, main authorities (NUDAT 2.6, NUBASE 2012) merely state <2 days. Figure is from https://periodictable.com/Isotopes/096.252/index2.html accessed 1 July 2016
  10. Jagdish K. Tuli, Nuclear Wallet Cards, 7th edition, April 2005, Brookhaven National Laboratory, US National Nuclear Data Center
  11. Interactive chart of nuclides (Brookhaven National Laboratory)
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