List of radioactive isotopes by half-life
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This is a list of radioactive isotopes ordered by half-life from shortest to longest.
10−24 seconds
| isotope | half-life 10−24 seconds |
|---|---|
| hydrogen-7 | 23 |
| hydrogen-5 | 80 |
| hydrogen-4 | 139 |
| nitrogen-10 | 200 |
| hydrogen-6 | 290 |
| lithium-5 | 324 |
| lithium-4 | 325 |
| boron-7 | 350 |
| helium-5 | 760 |
10−21 seconds
| isotope | half-life 10−21 seconds |
|---|---|
| helium-10 | 1.52 |
| lithium-10 | 2 |
| carbon-8 | 2 |
| helium-7 | 3.040 |
| beryllium-6 | 5 |
| helium-9 | 7 |
| boron-9 | 800 |
10−18 seconds
| isotope | half-life 10−18 seconds |
|---|---|
| beryllium-8 | 81.9 |
10−12 seconds
| isotope | half-life 10−12 seconds |
|---|---|
| boron-16 | 190 |
| beryllium-13 | 500 |
10−9 seconds
| isotope | half-life 10−9 seconds |
|---|---|
| lithium-12 | 10 |
| boron-18 | 26 |
| carbon-21 | 30 |
| beryllium-15 | 200 |
| beryllium-16 | 200 |
| polonium-212 | 299 |
10−6 seconds
| isotope | half-life 10−6 seconds |
|---|---|
| darmstadtium-267 | 3 |
| nobelium-250 | 5.7 |
| rutherfordium-254 | 23 |
| darmstadtium-270 | 160 |
| polonium-214 | 164 |
| darmstadtium-273 | 170 |
| darmstadtium-269 | 230 |
| copernicium-277 | 240 |
| ununtrium-278 | 340 |
| fermium-258 | 370 |
| hassium-264 | 540 |
| fermium-241 | 730 |
| hassium-263 | 760 |
| fermium-242 | 800 |
| ununoctium-294 | 890 |
10−3 seconds
| isotope | half-life 10−3 seconds |
|---|---|
| hassium-265 | 2 |
| boron-19 | 2.92 |
| meitnerium-266 | 3.4 |
| boron-17 | 5.08 |
| carbon-22 | 6.2 |
| lithium-11 | 8.59 |
| boron-15 | 9.87 |
| boron-14 | 12.5 |
| carbon-20 | 16 |
| boron-13 | 17.33 |
| boron-12 | 20.2 |
| beryllium-12 | 21.49 |
| carbon-19 | 46.2 |
| carbon-18 | 92 |
| bohrium-262 | 102 |
| helium-8 | 119 |
| carbon-9 | 126.5 |
| lithium-9 | 178.3 |
| carbon-17 | 193 |
| carbon-16 | 747 |
| boron-8 | 770 |
| helium-6 | 806.7 |
| lithium-8 | 839.9 |
100 seconds
| isotope | half-life seconds | |
|---|---|---|
| carbon-15 | 2.449 | |
| flerovium-289 | 2.6 | |
| beryllium-14 | 4.84 | |
| beryllium-11 | 13.81 | |
| carbon-10 | 19.29 | |
| dubnium-261 | 27 | |
| seaborgium-266 | 30 | |
| dubnium-262 | 34 | |
| minutes | seconds | |
| rutherfordium-261 | 1.35 | 81 |
| nobelium-253 | 1.62 | 97 |
| oxygen-15 | 2.0373 | 122.24 |
103 seconds
| isotope | half-life | |
|---|---|---|
| minutes | 103 seconds | |
| carbon-11 | 20.334 | 1.2200 |
| 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 |
| sodium-24 | 14.96 | 53.9 |
| days | 103 seconds | |
| fermium-252 | 1.058 | 91.4 |
| erbium-160 | 1.191 | 102.9 |
| neptunium-239 | 2.356 | 203.6 |
| fermium-253 | 3 | 260 |
| radon-222 | 3.8235 | 330.35 |
| manganese-52 | 5.591 | 483.1 |
| iodine-131 | 8.02 | 693 |
| thulium-167 | 9.25 | 799 |
106 seconds
| isotope | half-life | |
|---|---|---|
| days | 106 seconds | |
| phosphorus-32 | 14.29 | 1.235 |
| 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 |
| years | 106 seconds | |
| ruthenium-106 | 1.023 | 32.3 |
| neptunium-235 | 1.084 | 34.2 |
| cadmium-109 | 1.267 | 40.0 |
| thulium-171 | 1.92 | 61 |
| caesium-134 | 2.0652 | 65.17 |
| 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 |
| strontium-90 | 28.79 | 909 |
| curium-243 | 29.1 | 920 |
| caesium-137 | 30.17 | 952 |
109 seconds
| isotope | half-life | |
|---|---|---|
| years | 109 seconds | |
| titanium-44 | 63 | 2.0 |
| uranium-232 | 68.9 | 2.17 |
| plutonium-238 | 87.7 | 2.77 |
| samarium-151 | 96.6 | 3.05 |
| 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 |
| holmium-166(m1) | 1,200 | 38 |
| berkelium-247 | 1,380 | 44 |
| radium-226 | 1,600 | 50 |
| molybdenum-93 | 4,000 | 130 |
| holmium-153 | 4,570 | 144 |
| curium-246 | 4,730 | 149 |
| carbon-14[1] | 5,730 | 181 |
| plutonium-240 | 6,563 | 207.1 |
| thorium-229 | 7,340 | 232 |
| americium-243 | 7,370 | 233 |
| curium-245 | 8,500 | 270 |
| curium-250 | 9,000 | 280 |
| niobium-94 | 20,300 | 640 |
| plutonium-239 | 24,110 | 761 |
1012 seconds
| isotope | half-life | |
|---|---|---|
| 103 years | 1012 seconds | |
| protactinium-231 | 32.76 | 1.034 |
| lead-202 | 52.5 | 1.66 |
| lanthanum-137 | 60 | 1.9 |
| thorium-230 | 75.38 | 2.379 |
| nickel-59 | 76 | 2.4 |
| calcium-41 | 103 | 3.3 |
| neptunium-236 | 154 | 4.9 |
| uranium-233 | 159.2 | 5.02 |
| rhenium-186(m) | 200 | 6.3 |
| technetium-99 | 211.1 | 6.66 |
| krypton-81 | 229 | 7.2 |
| tin-126 | 230 | 7.3 |
| uranium-234 | 245.5 | 7.75 |
| plutonium-242 | 272.3 | 8.59 |
| chlorine-36 | 301 | 9.5 |
| curium-248 | 340 | 11 |
| bismuth-208 | 368 | 11.6 |
| aluminium-26 | 717 | 22.6 |
| 106 years | 1012 seconds | |
| selenium-79 | 1.13 | 36 |
| iron-60 | 1.5 | 47 |
| beryllium-10 | 1.36 | 43 |
| zirconium-93 | 1.53 | 48 |
| gadolinium-150 | 1.79 | 56 |
| neptunium-237 | 2.144 | 67.7 |
| caesium-135 | 2.3 | 73 |
| technetium-97 | 2.6 | 82 |
| dysprosium-154 | 3 | 95 |
| bismuth-210(m) | 3.04 | 96 |
| manganese-53 | 3.7 | 120 |
| technetium-98 | 4.2 | 130 |
| palladium-107 | 6.5 | 210 |
| hafnium-182 | 9 | 280 |
| lead-205 | 15.3 | 480 |
| curium-247 | 15.6 | 490 |
| iodine-129 | 15.7 | 500 |
| uranium-236 | 23.42 | 739 |
1015 seconds
| 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 |
1018 seconds
| isotope | half-life | |
|---|---|---|
| 109 years | 1018 seconds | |
| lutetium-176 | 38.5 | 1.21 |
| rhenium-187 | 41.2 ± .2 | 1.3002 ± 0.0063 |
| rubidium-87 | 49.23 | 1.554 |
| lanthanum-138 | 102 | 3.2 |
| samarium-147 | 106 | 3.3 |
| platinum-190 | 650 ± 30 | 20.51 ± 0.95 |
1021 seconds
| isotope | half-life | |
|---|---|---|
| 1012 years | 1021 seconds | |
| gadolinium-152 | 108 | 3.4 |
| indium-115 | 441 | 13.9 |
| 1015 years | 1021 seconds | |
| tantalum-180m | 1.0 | 32 |
| hafnium-174 | 2.0 | 63 |
| osmium-186 | 2.0 | 63 |
| neodymium-144 | 2.29 | 72 |
| samarium-148 | 7 | 220 |
| cadmium-113 | 7.7 | 240 |
1024 seconds
| isotope | half-life | |
|---|---|---|
| 1015 years | 1024 seconds | |
| vanadium-50 | 140 ± 40 | 4.4 ± 1.3 |
| 1018 years | 1024 seconds | |
| tungsten-180 | 1.8 ± .2 | 56.8 ± 6.3 |
| europium-151 | 5 | 160 |
| neodymium-150 | 6.7 | 210 |
| molybdenum-100 | 8.5 | 270 |
| bismuth-209 | 19 ± 2 | 600 ± 63 |
| zirconium-96 | 20 | 630 |
| cadmium-116 | 31 ± 4 | 980 ± 130 |
1027 seconds
| isotope | half-life | |
|---|---|---|
| 1018 years | 1027 seconds | |
| calcium-48 | 43 | 1.4 |
| selenium-82 | 97 | 3.1 |
| tellurium-130 | 790 | 25 |
| 1021 years | 1027 seconds | |
| barium-130 | 1.6 | 50 |
| germanium-76 | 1.8 | 57 |
| xenon-136 | 2.38 | 75 |
1030 seconds
| isotope | half-life | |
|---|---|---|
| 1024 years | 1030 seconds | |
| tellurium-128 | 2.2 ± 0.3 | 69.4 ± 9.5 |
Tellurium-128's half-life is over 160 trillion times longer than the universe has existed.
See also
Notes
- ↑ 14
C is used in radiocarbon dating.
External links
- Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above.
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