This is a list of radioactive isotopes ordered by half-life from the shortest to the longest.
Contents |
| isotope | half-life 10−18 seconds |
|---|---|
| Beryllium-8 | 70 |
| isotope | half-life 10−6 seconds |
|---|---|
| Copernicium-277 | 240 |
| isotope | half-life 10−3 seconds |
|---|---|
| hassium-265 | 2 |
| meitnerium-266 | 3.4 |
| bohrium-262 | 102 |
| lithium-8 | 838 |
| isotope | half-life seconds |
|---|---|
| dubnium-261 | 27 |
| seaborgium-266 | 30 |
| ununquadium-289 | 30 |
| dubnium-262 | 34 |
| rutherfordium-261 | 61 |
| nobelium-253 | 102 |
| isotope | half-life | |
|---|---|---|
| minutes | 103 seconds | |
| nobelium-259 | 58 | 3.5 |
| hours | 103 seconds | |
| fluorine-18 | 1.8295 | 6.586 |
| mendelevium-257 | 5.52 | 19.9 |
| erbium-165 | 10.36 | 37.3 |
| fermium-252 | 25.39 | 91.4 |
| erbium-160 | 28.58 | 102.9 |
| days | 103 seconds | |
| fermium-253 | 3 | 260 |
| manganese-52 | 5.591 | 483.1 |
| thulium-167 | 9.25 | 799 |
| isotope | half-life | |
|---|---|---|
| days | 106 seconds | |
| vanadium-48 | 15.9735 | 1.38011 |
| californium-253 | 17.81 | 1.539 |
| chromium-51 | 27.7025 | 2.39350 |
| mendelevium-258 | 51.5 | 4.45 |
| beryllium-7 | 53.12 | 4.590 |
| californium-254 | 60.5 | 5.23 |
| cobalt-56 | 77.27 | 6.676 |
| scandium-46 | 83.79 | 7.239 |
| sulfur-35 | 87.32 | 7.544 |
| thulium-168 | 93.1 | 8.04 |
| fermium-257 | 100.5 | 8.68 |
| thulium-170 | 128.6 | 11.11 |
| polonium-210 | 138 | 11.9 |
| cobalt-57 | 271.79 | 23.483 |
| vanadium-49 | 330 | 29 |
| californium-248 | 333.5 | 28.81 |
| ruthenium-106 | 373.59 | 32.278 |
| neptunium-235 | 396.1 | 34.22 |
| cadmium-109 | 462.6 | 39.97 |
| years | 106 seconds | |
| thulium-171 | 1.92 | 61 |
| sodium-22 | 2.602 | 82.1 |
| rhodium-101 | 3.3 | 100 |
| cobalt-60 | 5.2714 | 166.35 |
| hydrogen-3 | 12.32 | 389 |
| californium-250 | 13.08 | 413 |
| niobium meta state Nb-93m |
16.13 | 509 |
| curium-243 | 29.1 | 920 |
| isotope | half-life | |
|---|---|---|
| years | 109 seconds | |
| titanium-44 | 63 | 2.0 |
| uranium-232 | 68.9 | 2.17 |
| plutonium-238 | 87.7 | 2.77 |
| nickel-63 | 100.1 | 3.16 |
| silicon-32 | 170 | 5.4 |
| argon-39 | 269 | 8.5 |
| californium-249 | 351 | 11.1 |
| silver-108 | 418 | 13.2 |
| americium-241 | 432.2 | 13.64 |
| niobium-91 | 680 | 21 |
| californium-251 | 898 | 28.3 |
| carbon-14[1] | 5,715 | 180.4 |
| americium-243 | 7,370 | 233 |
| curium-245 | 8,500 | 270 |
| niobium-94 | 20,300 | 640 |
| plutonium-239 | 24,110 | 761 |
| isotope | half-life | |
|---|---|---|
| 103 years | 1012 seconds | |
| nickel-59 | 76 | 2.4 |
| neptunium-236 | 154 | 4.9 |
| uranium-233 | 159.2 | 5.02 |
| technetium-99 | 211.1 | 6.66 |
| uranium-234 | 245.5 | 7.75 |
| chlorine-36 | 301 | 9.5 |
| curium-248 | 340 | 11 |
| aluminium-26 | 717 | 22.6 |
| 106 years | 1012 seconds | |
| beryllium-10 | 1.36 | 43 |
| zirconium-93 | 1.53 | 48 |
| technetium-97 | 2.6 | 82 |
| manganese-53 | 3.74 | 118 |
| technetium-98 | 4.2 | 130 |
| palladium-107 | 6.5 | 210 |
| curium-247 | 15.6 | 490 |
| uranium-236 | 23.42 | 739 |
| isotope | half-life | |
|---|---|---|
| 106 years | 1015 seconds | |
| niobium-92 | 34.7 | 1.10 |
| plutonium-244 | 80 | 2.5 |
| samarium-146 | 103.5 | 3.27 |
| uranium-235 | 703.8 | 22.21 |
| 109 years | 1015 seconds | |
| potassium-40 | 1.277 | 40.3 |
| uranium-238 | 4.468 | 141.0 |
| thorium-232 | 14.056 | 443.6 |
| lutetium-176 | 38.5 | 1,210 |
| rhenium-187 | 41.2 ± .2 | 1,300 ± 6.3 |
| rubidium-87 | 49.23 | 1,554 |
| lanthanum-138 | 102 | 3,200 |
| samarium-147 | 106 | 3,300 |
| platinum-190 | 650 ± 30 | 21,000 ± 950 |
| isotope | half-life | |
|---|---|---|
| 1012 years | 1021 seconds | |
| barium-130 | 70 | 2.2 |
| gadolinium-152 | 108 | 3.4 |
| indium-115 | 441 | 13.9 |
| 1015 years | 1024 seconds | |
| hafnium-174 | 2.0 | 0.063 |
| osmium-186 | 2.0 | 0.063 |
| neodymium-144 | 2.29 | 0.072 |
| samarium-148 | 7 | 0.22 |
| cadmium-113 | 7.7 | 0.24 |
| vanadium-50 | 140 ± 40 | 4.4 ± 1.3 |
| 1018 years | 1024 seconds | |
| tungsten-180 | 1.8 ± .2 | 57 ± 6.3 |
| molybdenum-100 | 8.5 | 270 |
| bismuth-209 | 19 ± 2 | 600 ± 63 |
| zirconium-96 | 20 | 630 |
| cadmium-116 | 31 ± 4 | 980 ± 130 |
| selenium-82 | 97 | 3.1 |
| tellurium-130 | 790 | 25 |
| 1021 years | 1027 seconds | |
| germanium-76 | 1.8 | 0.057 |
| neodymium-150 | 6.7 | 0.21 |
| calcium-48 | 40 | 1.3 |
| 1024 years | 1030 seconds | |
| tellurium-128 | 2.2 ± 0.3 | 69 ± 9.5 |