List of radioactive nuclides by half-life explained
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10−19 and 10−10 seconds.[1]
10−24 seconds (yoctoseconds)
| isotope | class=unsortable | half-life
10−24 seconds |
|---|
| hydrogen-5 | |
| lithium-4 | |
| hydrogen-4 | |
| nitrogen-10 | |
| oxygen-11 | |
| helium-10 | |
| hydrogen-6 | |
| lithium-5 | |
| fluorine-14 | |
| boron-7 | |
| nitrogen-11 | |
| helium-5 | |
| beryllium-16 | |
| hydrogen-7 | |
| nitrogen-11m | |
| boron-21 | > |
| neon-15 | |
| beryllium-15 | |
| boron-20 | > |
| beryllium-11m | | |
Twenty-three yoctoseconds is the time needed to traverse a 7-
femtometre distance at the
speed of light—around the diameter of a large
atomic nucleus.
10−21 seconds (zeptoseconds)
| isotope | class=unsortable | half-life
10−21 seconds |
|---|
| beryllium-13 | 1.0 |
| fluorine-15 | 1.11 |
| oxygen-12 | 1.14 |
| sodium-18 | 1.34 |
| lithium-10m2 | 1.35 |
| lithium-10 | 2.0 |
| beryllium-13 | 2.7 |
| helium-7 | 2.51 |
| lithium-13 | 3.3 |
| carbon-8 | 3.5 |
| lithium-10m1 | 3.7 |
| neon-16 | 3.74 |
| boron-14m | 4.15 |
| boron-16 | >4.6 |
| beryllium-6 | 5.0 |
| helium-9 | 7 |
| fluorine-16 | 11 |
| boron-9 | 845 | |
10−18 seconds (attoseconds)
10−12 seconds (picoseconds)
| isotope | class=unsortable | half-life
10−12 seconds |
|---|
| oxygen-26 | 4.2 |
| magnesium-19 | 5(3) |
| argon-30 | <10 |
| potassium-31 | <10 |
| sodium-22m2 | 19.6 |
| boron-16 | ≤190 | |
10−9 seconds (nanoseconds)
10−6 seconds (microseconds)
10−3 seconds (milliseconds)
100 seconds
| isotope | class=unsortable colspan=2 | half-life
seconds |
|---|
| seaborgium-263 | 1 |
| astatine-198m | 1.0 |
| mendelevium-246 | 1.0 |
| thorium-224 | 1.05 |
| sodium-26 | 1.077 |
| plutonium-228 | 1.1 |
| mendelevium-247 | 1.12 |
| curium-246m | 1.12 |
| bohrium-271 | 1.2 |
| thorium-215 | 1.2 |
| radium-208 | 1.3 |
| radium-207 | 1.3 |
| rutherfordium-268 | 1.4 |
| hassium-268 | 1.42 |
| polonium-217 | 1.47 |
| astatine-218 | 1.5 |
| lawrencium-253m | 1.5 |
| fermium-259 | 1.5 |
| dubnium-260 | 1.52 |
| dubnium-257 | 1.53 |
| fermium-246 | 1.54 |
| neon-18 | 1.672 |
| francium-204 | 1.7 |
| francium-204m2 | 1.7 |
| nobelium-251m | 1.7 |
| protactinium-225 | 1.7 |
| americium-229 | 1.8 |
| flerovium-289 | 1.9 |
| dubnium-256 | 1.9 |
| mendelevium-249m | 1.9 |
| dubnium-258m | 1.9 |
| polonium-195m | 1.92 |
| fermium-250m | 1.92 |
| astatine-197m | 2.0 |
| californium-237 | 2.1 |
| fluorine-23 | 2.23 |
| oxygen-22 | 2.25 |
| nobelium-252 | 2.27 |
| rutherfordium-255 | 2.3 |
| rutherfordium-262 | 2.3 |
| carbon-15 | 2.449 |
| radium-214 | 2.46 |
| rutherfordium-259m | 2.5 |
| francium-204m1 | 2.6 |
| radium-213 | 2.74 |
| polonium-207m3 | 2.79 |
| nobelium-256 | 2.91 |
| bismuth-193m | 3.2 |
| rutherfordium-259 | 3.2 |
| oxygen-21 | 3.42 |
| astatine-200m2 | 3.5 |
| radium-210 | 3.7 |
| francium-205 | 3.80 |
| radon-201m | 3.8 |
| radon-219 | 3.96 |
| rutherfordium-261m | 4 |
| lead-185m | 4.07 |
| rutherfordium-257m | 4.1 |
| lawrencium-258 | 4.1 |
| fluorine-21 | 4.158 |
| nitrogen-17 | 4.173 |
| copernicium-283 | 4.2 |
| astatine-198 | 4.2 |
| nihonium-285 | 4.2 |
| fermium-245 | 4.2 |
| fluorine-22 | 4.23 |
| meitnerium-278 | 4.5 |
| dubnium-258 | 4.5 |
| dubnium-261 | 4.5 |
| roentgenium-280 | 4.6 |
| radium-209 | 4.6 |
| polonium-195 | 4.64 |
| rutherfordium-257 | 4.7 |
| lead-186 | 4.82 |
| actinium-222 | 5.0 |
| francium-232 | 5 |
| polonium-196 | 5.56 |
| einsteinium-240 | 6 |
| lawrencium-259 | 6.2 |
| bismuth-190m1 | 6.2 |
| lead-203m1 | 6.21 |
| bismuth-190 | 6.3 |
| lead-185 | 6.3 |
| astatine-199 | 6.92 |
| radon-201 | 7.0 |
| mendelevium-248 | 7 |
| nitrogen-16 | 7.13 |
| bismuth-198m2 | 7.7 |
| meitnerium-278 | 8 |
| seaborgium-265 | 8 |
| actinium-214 | 8.2 |
| bismuth-219 | 8.7 |
| hassium-270 | 9 |
| bismuth-220 | 9.5 |
| nihonium-286 | 9.5 |
| radon-202 | 9.94 |
| bohrium-272 | 10 |
| hassium-271 | 10 |
| einsteinium-241 | 10 |
| fluorine-20 | 11.07 |
| radon-229 | 12 |
| bismuth-191 | 12.3 |
| darmstadtium-281 | 12.7 |
| radium-212 | 13.0 |
| radium-211 | 13 |
| lawrencium-254 | 13 |
| einsteinium-242 | 13.5 |
| oxygen-20 | 13.51 |
| beryllium-11 | 13.81 |
| darmstadtium-281 | 14 |
| francium-207 | 14.8 |
| lead-218 | 15 |
| lead-187 | 15.2 |
| francium-206m1 | 15.9 |
| francium-206 | 16 |
| hassium-269 | 16 |
| seaborgium-265m | 16.2 |
| bohrium-267 | 17 |
| roentgenium-281 | 17 |
| neon-19 | 17.22 |
| francium-231 | 17.6 |
| lead-187m | 18.3 |
| berkelium-234 | 19 |
| francium-230 | 19.1 |
| carbon-10 | 19.29 |
| lead-217 | 20 |
| radon-227 | 20.8 |
| einsteinium-243 | 21 |
| berkelium-233 | 21 |
| berkelium-236 | 22 |
| lawrencium-255 | 22 |
| sodium-21 | 22.49 |
| rutherfordium-266 | 23 |
| mendelevium-249 | 24 |
| nobelium-257 | 25 |
| polonium-211m1 | 25.2 |
| lead-188 | 25.5 |
| polonium-197m | 25.8 |
| oxygen-19 | 26.464 |
| radon-203m | 26.7 |
| curium-233 | 27 |
| lawrencium-256 | 27 |
| francium-220 | 27.4 |
| copernicium-285 | 28 |
| radium-221 | 28 |
| dubnium-263 | 29 |
| copernicium-285 | 30 |
| radium-234 | 30 |
| radium-233 | 30 |
| radium-221 | 30 |
| fermium-247 | 31 |
| americium-230 | 32 |
| bismuth-218 | 33 |
| bismuth-192 | 34.6 |
| francium-213 | 34.6 |
| dubnium-262 | 35 |
| fermium-248 | 35.1 |
| bismuth-215m | 36.9 |
| einsteinium-244 | 37 |
| neon-23 | 37.24 |
| radium-222 | 38.0 |
| francium-228 | 38 |
| bismuth-192m | 39.6 |
| polonium-220 | 40 |
| bohrium-274 | 40 |
| astatine-200 | 43.2 |
| actinium-234 | 44 |
| radon-203 | 44.2 |
| polonium-203m1 | 45 |
| polonium-212m | 45.1 |
| hassium-271 | 46 |
| astatine-200m1 | 47 |
| francium-226 | 49 |
| francium-209 | 50.0 |
| astatine-223 | 50 |
| francium-229 | 50.2 |
| lead-189m1 | 50.5 |
| nobelium-254 | 51 |
| lead-189 | 51 |
| curium-234 | 52 |
| mendelevium-250 | 52 |
| polonium-197 | 53.6 |
| astatine-222 | 54 |
| radon-220 | 55.6 |
| astatine-219 | 56 |
| francium-208 | 59.1 |
| sodium-25 | 59.1 |
| class=unsortable | minutes | class=unsortable | seconds |
|---|
| californium-239 | 60order=flipNaNorder=flip |
| actinium-235 | 60order=flipNaNorder=flip |
| lead-201m1 | 61order=flipNaNorder=flip |
| bohrium-270 | 61order=flipNaNorder=flip |
| neptunium-228 | 61.4order=flipNaNorder=flip |
| actinium-222m | 1.05min |
| californium-240 | 1.06min |
| fluorine-17 | 64.49order=flipNaNorder=flip |
| radon-228 | 65order=flipNaNorder=flip |
| uranium-227 | 1.1min |
| einsteinium-245 | 1.1min |
| bismuth-193 | 67order=flipNaNorder=flip |
| radon-204 | 1.17min |
| protactinium-234m | 1.17min |
| oxygen-14 | 70.62order=flipNaNorder=flip |
| lead-190 | 71order=flipNaNorder=flip |
| actinium-236 | 72order=flipNaNorder=flip |
| rutherfordium-261 | 78order=flipNaNorder=flip |
| americium-232 | 79order=flipNaNorder=flip |
| lead-191 | 1.33min |
| seaborgium-267 | 1.4min |
| astatine-201 | 85order=flipNaNorder=flip |
| bismuth-195m1 | 87order=flipNaNorder=flip |
| bismuth-194 | 95order=flipNaNorder=flip |
| fermium-249 | 1.6min |
| nobelium-253 | 1.62min |
| bismuth-217 | 98.5order=flipNaNorder=flip |
| lead-216 | 1.65min |
| roentgenium-282 | 102order=flipNaNorder=flip |
| plutonium-230 | 1.7min |
| radium-231 | 103order=flipNaNorder=flip |
| polonium-198 | 1.77min |
| protactinium-226 | 1.8min |
| berkelium-252 | 1.8min |
| neptunium-243 | 1.85min |
| bismuth-194m2 | 115order=flipNaNorder=flip |
| actinium-232 | 119order=flipNaNorder=flip |
| protactinium-240 | 2min |
| plutonium-229 | 120order=flipNaNorder=flip |
| actinium-230 | 122order=flipNaNorder=flip |
| oxygen-15 | 122.24order=flipNaNorder=flip |
| bismuth-194m1 | 125order=flipNaNorder=flip |
| actinium-223 | 2.1min |
| bismuth-211 | 2.14min |
| bismuth-216 | 2.17min |
| lead-191m | 2.18min |
| polonium-221 | 2.2min |
| neptunium-242 | 2.2min |
| protactinium-238 | 2.27min |
| neptunium-244 | 2.29min |
| mendelevium-252 | 2.3min |
| astatine-221 | 2.3min |
| americium-234 | 2.32min |
| lead-215 | 2.34min |
| berkelium-238 | 2.4min |
| bohrium-270 | 2.4min |
| seaborgium-271 | 2.4min |
| actinium-233 | 145order=flipNaNorder=flip |
| francium-227 | 2.47min |
| astatine-224 | 2.5min |
| lawrencium-260 | 2.7min |
| radon-205 | 170order=flipNaNorder=flip |
| astatine-202m1 | 182order=flipNaNorder=flip |
| bismuth-195 | 183order=flipNaNorder=flip |
| astatine-202 | 184order=flipNaNorder=flip |
| polonium-218 | 3.1min |
| francium-211 | 3.1min |
| nobelium-255 | 3.1min |
| francium-210 | 3.18min |
| americium-233 | 3.2min |
| francium-224 | 3.33min |
| neon-24 | 203order=flipNaNorder=flip |
| californium-242 | 3.49min |
| lead-192 | 3.5min |
| americium-236 | 3.6min |
| astatine-220 | 3.71min |
| californium-241 | 3.78min |
| radium-229 | 4min |
| mendelevium-251 | 4min |
| francium-225 | 4min |
| neptunium-229 | 4min |
| bismuth-196m2 | 4min |
| radium-232 | 250order=flipNaNorder=flip |
| polonium-199m | 4.17min |
| einsteinium-247 | 4.55min |
| berkelium-241 | 4.6min |
| neptunium-230 | 4.6min |
| radon-225 | 4.66min |
| berkelium-240 | 4.8min |
| thorium-237 | 4.8min |
| francium-221 | 4.9min |
| curium-235 | 5min |
| lead-193 | 5min |
| bismuth-197m1 | 5.04min |
| bismuth-196 | 5.1min |
| polonium-199 | 5.48min |
| neptunium-242m | 5.5min |
| radon-206 | 5.67min |
| titanium-51 | 5.76min |
| lead-193m1 | 5.8min |
| bismuth-216m | 6.6min |
| curium-236 | 6.8min |
| berkelium-242 | 7min |
| bismuth-212m2 | 7min |
| thorium-235 | 7.2min |
| neptunium-240m | 7.22min |
| astatine-203 | 7.37min |
| radon-226 | 7.4min |
| actinium-231 | 7.5min |
| bismuth-215 | 7.6min |
| einsteinium-246 | 7.7min |
| lead-197 | 8.1min |
| plutonium-231 | 8.6min |
| protactinium-237 | 8.7min |
| thorium-225 | 8.72min |
| polonium-201m | 8.9min |
| protactinium-236 | 9.1min |
| polonium-222 | 9.1min |
| uranium-228 | 9.1min |
| astatine-204 | 9.2min |
| radon-207 | 9.25min |
| bismuth-197 | 9.33min |
| thorium-238 | 9.4min |
| copper-62 | 9.673min |
| seaborgium-267 | 9.8min |
| americium-235 | 9.9min |
| nitrogen-13 | 9.965min |
| berkelium-253 | 10min |
| mercury-210[2] | 10min |
| mendelevium-254 | 10min |
| lead-213 | 10.2min |
| bismuth-198 | 10.3min |
| polonium-219 | 10.3min |
| californium-243 | 10.7min |
| polonium-200 | 11.5min |
| bismuth-198m1 | 11.6min |
| lead-194 | 12min |
| mendelevium-253 | 12min |
| lead-199m1 | 12.2min |
| californium-256 | 12.3min |
| neptunium-241 | 13.9min |
| seaborgium-269 | 14min |
| francium-222 | 14.2min |
| [free] neutron, | 881.5order=flipNaNorder=flip |
| neptunium-232 | 14.7min |
| lead-195m1 | 15min |
| rutherfordium-263 | 15min |
| lead-195 | ~15 | ~900 |
| polonium-201 | 15.3min | |
103 seconds (kiloseconds)
| isotope | half-life |
|---|
| class=unsortable | minutes | class=unsortable | 103 seconds |
|---|
| curium-251 | 16.8min |
| uranium-242 | 16.8min |
| californium-244 | 19.4min |
| bismuth-214 | 19.9min |
| francium-212 | 20min |
| curium-237 | 20min |
| carbon-11 | 20.334min |
| plutonium-233 | 20.9min |
| thorium-233 | 21.83min |
| francium-223 | 22min |
| americium-247 | 23min |
| uranium-239 | 23.45min |
| radon-212 | 23.9min |
| radon-223 | 24.3min |
| radon-208 | 24.35min |
| protactinium-235 | 24.44min |
| bismuth-199m1 | 24.7min |
| bismuth-212m1 | 25min |
| americium-246m1 | 25min |
| plutonium-235 | 25.3min |
| einsteinium-256 | 25.4min |
| radon-221 | 25.7min |
| americium-244m | 26min |
| uranium-235m | 26min |
| astatine-205 | 26.2min |
| lead-214 | 26.8min |
| mendelevium-255 | 27min |
| bismuth-199 | 27min |
| einsteinium-248 | 27min |
| mendelevium-254m | 28min |
| radon-209 | 28.5min |
| fermium-250 | 30.4min |
| thorium-226 | 30.57min |
| astatine-206 | 30.6min |
| bismuth-200m1 | 31min |
| plutonium-232 | 33.7min |
| lead-211 | 36.1min |
| neptunium-233 | 36.2min |
| bismuth-200 | 36.4min |
| polonium-203 | 36.7min |
| lead-196 | 37min |
| chlorine-38 | 37.24min |
| thorium-236 | 37.5min |
| protactinium-227 | 38.3min |
| americium-246 | 39min |
| uranium-241[3] [4] | 40min |
| radium-227 | 42.2min |
| lead-197m1 | 42.9min |
| lawrencium-261 | 44min |
| polonium-202 | 44.7min |
| californium-245 | 45min |
| bismuth-213 | 45.59min |
| neptunium-231 | 48.8min |
| mercury-191 | 49min |
| berkelium-251 | 55.6min |
| mendelevium-258m | 57min |
| uranium-229 | 58min |
| nobelium-259 | 58min |
| bismuth-201m1 | 59.1min |
| class=unsortable | hours | class=unsortable | 103 seconds |
|---|
| dubnium-270 | 1h |
| bismuth-212 | 1.0092h |
| neptunium-240 | 1.032h |
| actinium-229 | 1.045h |
| curium-249 | 1.0692h |
| lead-204m2 | 1.12h |
| gallium-68 | 1.1285h |
| americium-237 | 1.22h |
| mendelevium-256 | 1.283h |
| rutherfordium-267 | 1.3h |
| dubnium-266 | 1.33h |
| californium-255 | 1.417h |
| lead-199 | 1.5h |
| radium-230 | 1.55h |
| mendelevium-259 | 1.6h |
| americium-238 | 1.63h |
| astatine-208 | 1.63h |
| polonium-205 | 1.66h |
| einsteinium-249 | 1.703h |
| bismuth-202 | 1.72h |
| astatine-207 | 1.8h |
| bismuth-201 | 1.8h |
| protactinium-239 | 1.8h |
| fluorine-18 | 1.8295h |
| americium-245 | 2.05h |
| einsteinium-250m | 2.22h |
| radon-210 | 2.4h |
| lead-198 | 2.4h |
| curium-238 | 2.4h |
| curium-239 | 2.5h |
| fermium-256 | 2.627h |
| yttrium-85 | 2.68h |
| actinium-224 | 2.78h |
| californium-247 | 3.11h |
| berkelium-250 | 3.212h |
| fermium-254 | 3.24h |
| lead-209 | 3.253h |
| lead-202m1 | 3.53h |
| polonium-204 | 3.53h |
| lawrencium-262 | 3.6h |
| berkelium-244 | 4.35h |
| berkelium-243 | 4.5h |
| dubnium-267 | 4.6h |
| plutonium-243 | 4.956h |
| fermium-251 | 5.3h |
| polonium-207 | 5.8h |
| astatine-209 | 5.41h |
| mendelevium-257 | 5.52h |
| actinium-228 | 6.13h |
| dysprosium-153 | 6.4h |
| protactinium-234 | 6.7h |
| astatine-211 | 7.214h |
| einsteinium-256m | 7.6h |
| astatine-210 | 8.1h |
| einsteinium-250 | 8.6h |
| plutonium-234 | 8.8h |
| lead-201 | 9.33h |
| americium-244 | 10.1h |
| erbium-165 | 10.36h |
| plutonium-245 | 10.5h |
| lead-212 | 10.64h |
| lawrencium-266 | 11h |
| bismuth-204 | 11.22h |
| bismuth-203 | 11.76h |
| americium-239 | 11.9h |
| uranium-240 | 14.1h |
| radon-211 | 14.6h |
| sodium-24 | 14.96h |
| americium-242 | 16.02h |
| fermium-255 | 20.07h |
| lead-200 | 21.5h |
| protactinium-228 | 22h |
| neptunium-236m | 22.5h |
| berkelium-248m | 23.7h |
| class=unsortable | days | class=unsortable | 103 seconds |
|---|
| fermium-252 | 1.058d |
| thorium-231 | 1.0634d |
| dubnium-268 | 1.283d |
| erbium-160 | 1.191d |
| actinium-226 | 1.2238d |
| protactinium-232 | 1.31d |
| einsteinium-251 | 1.375d |
| californium-246 | 1.4875d |
| protactinium-229 | 1.5d |
| einsteinium-255 | 1.6375d |
| berkelium-246 | 1.8d |
| neptunium-238 | 2.117d |
| americium-240 | 2.117d |
| lead-203 | 2.16138d |
| plutonium-247 | 2.27d |
| terbium-153 | 2.34d |
| neptunium-239 | 2.356d |
| gold-198 | 2.695d |
| fermium-253 | 3d |
| gold-199 | 3.169d |
| radium-224 | 3.6319d |
| radon-222 | 3.8235d |
| uranium-231 | 4.16d |
| iodine-124 | 4.17d |
| neptunium-234 | 4.4d |
| calcium-47 | 4.536d |
| berkelium-245 | 4.94d |
| bismuth-210 | 5.012d |
| manganese-52 | 5.591d |
| gold-196 | 6.183d |
| bismuth-206 | 6.243d |
| uranium-237 | 6.75d |
| einsteinium-257 | 7.7d |
| iodine-131 | 8.02d |
| polonium-206 | 8.8d |
| thulium-167 | 9.25d |
| gadolinium-149 | 9.28d |
| actinium-225 | 10d |
| plutonium-246 | 10.84d |
| radium-223 | 11.43d | |
106 seconds (megaseconds)
| isotope | half-life |
|---|
| class=unsortable | days | class=unsortable | 106 seconds |
|---|
| phosphorus-32 | 14.29d |
| radium-225 | 14.9d |
| bismuth-205 | 15.31d |
| vanadium-48 | 15.9735d |
| protactinium-230 | 17.4d |
| californium-253 | 17.81d |
| thorium-227 | 18.68d |
| einsteinium-253 | 20.47d |
| uranium-230 | 20.8d |
| thorium-234 | 24.1d |
| protactinium-233 | 26.975d |
| curium-240 | 27d |
| chromium-51 | 27.7025d |
| mendelevium-260 | 27.8d |
| curium-241 | 32.8d |
| einsteinium-255 | 39.8d |
| plutonium-237 | 45.2d |
| mendelevium-258 | 51.5d |
| beryllium-7 | 53.12d |
| californium-254 | 60.5d |
| cobalt-56 | 77.27d |
| scandium-46 | 83.79d |
| sulfur-35 | 87.32d |
| thulium-168 | 93.1d |
| fermium-257 | 100.5d |
| thulium-170 | 128.6d |
| polonium-210 | 138.376d |
| calcium-45 | 162.7d |
| curium-242 | 162.8d |
| gold-195 | 186.1d |
| gadolinium-153 | 240.4d |
| zinc-65 | 243.7d |
| cobalt-57 | 271.79d |
| einsteinium-254 | 275.7d |
| vanadium-49 | 330d |
| berkelium-249 | 330d |
| californium-248 | 333.5d |
| samarium-145 | 340d |
| class=unsortable | years | class=unsortable | 106 seconds |
|---|
| ruthenium-106 | 1.023yr |
| neptunium-235 | 1.0845yr |
| cadmium-109 | 1.267yr |
| einsteinium-252 | 1.2915yr |
| thorium-228 | 1.9116yr |
| thulium-171 | 1.92yr |
| caesium-134 | 2.0652yr |
| sodium-22 | 2.602yr |
| californium-252 | 2.645yr |
| iron-55 | 2.756yr |
| plutonium-236 | 2.858yr |
| polonium-208 | 2.898yr |
| rhodium-101 | 3.3yr |
| cobalt-60 | 5.2714yr |
| radium-228 | 5.75yr |
| barium-133 | [5] 10.74yr |
| krypton-85 | 10.756yr |
hydrogen-3
(also known as tritium) | 12.32yr |
| californium-250 | 13.08yr |
| plutonium-241 | 14.29yr |
| niobium-93m | 16.13yr |
| promethium-145 | 17.711yr |
| curium-244 | 18.1yr |
| actinium-227 | 21.772yr |
| lead-210 | 22.3yr |
| strontium-90 | 28.79yr |
| curium-243 | 29.1yr |
| caesium-137 | 30.17yr | |
109 seconds (gigaseconds)
1012 seconds (teraseconds)
| isotope | half-life |
|---|
| class=unsortable | millennia | class=unsortable | 1012 seconds |
|---|
| protactinium-231 | 32.76yr |
| lead-202 | 52.5yr |
| lanthanum-137 | 60yr |
| thorium-230 | 75.38yr |
| nickel-59 | 76yr |
| calcium-41 | 103yr |
| neptunium-236 | 154yr |
| uranium-233 | 159.2yr |
| rhenium-186m | 200yr |
| technetium-99 | 211.1yr |
| krypton-81 | 229yr |
| tin-126 | 230yr |
| uranium-234 | 245.5yr |
| chlorine-36 | 301yr |
| selenium-79 | 327yr |
| curium-248 | 348yr |
| bismuth-208 | 368yr |
| plutonium-242 | 375yr |
| aluminium-26 | 717yr |
| class=unsortable | 106 years | class=unsortable | 1012 seconds |
|---|
| beryllium-10 | 1.39yr |
| zirconium-93 | 1.53yr |
| gadolinium-150 | 1.79yr |
| neptunium-237 | 2.144yr |
| caesium-135 | 2.3yr |
| iron-60 | 2.6yr |
| technetium-97 | 2.6yr |
| dysprosium-154 | 3yr |
| bismuth-210m | 3.04yr |
| manganese-53 | 3.7yr |
| technetium-98 | 4.2yr |
| palladium-107 | 6.5yr |
| hafnium-182 | 8.9yr |
| lead-205 | 17.3yr |
| curium-247 | 15.6yr |
| iodine-129 | 15.7yr |
| uranium-236 | 23.42yr | |
1015 seconds (petaseconds)
1018 seconds (exaseconds)
| isotope | half-life |
|---|
| class=unsortable | 109 years | class=unsortable | 1018 seconds |
|---|
| lutetium-176 | 37.64yr |
| rhenium-187 | 41.22yr |
| rubidium-87 | 49.72yr |
| lanthanum-138 | 102.1yr |
| samarium-147 | 106.1yr |
| platinum-190 | 483yr | |
1021 seconds (zettaseconds)
| isotope | half-life |
|---|
| class=unsortable | 1012 years | class=unsortable | 1021 seconds |
|---|
| osmium-184 | 11.2yr |
| gadolinium-152 | 108yr |
| indium-115 | 441yr |
| class=unsortable | 1015 years | class=unsortable | 1021 seconds |
|---|
| osmium-186 | 2.002yr |
| neodymium-144 | 2.292yr |
| samarium-148 | 7.005yr |
| cadmium-113 | 7.7yr | |
1024 seconds (yottaseconds)
| isotope | half-life |
|---|
| class=unsortable | 1015 years | class=unsortable | 1024 seconds |
|---|
| hafnium-174 | 70yr |
| vanadium-50 | 140yr |
| class=unsortable | 1018 years | class=unsortable | 1024 seconds |
|---|
| tungsten-180 | 1.801yr |
| europium-151 | 5.004yr |
| molybdenum-100 | 7.804yr |
| neodymium-150 | 7.905yr |
| tellurium-130 | 8.806yr |
| zirconium-96 | 20yr |
| bismuth-209 | 20.1yr |
| calcium-48 | 23.01yr |
| cadmium-116 | 31.02yr | |
1027 seconds (ronnaseconds)
| isotope | half-life |
|---|
| 1021 years | 1027 seconds |
|---|
| selenium-82 | 0.0975yr |
| barium-130 | 1.2yr |
| germanium-76 | 1.8yr |
| xenon-136 | 2.165yr |
| krypton-78 | 9.2yr |
| xenon-124 | 18yr | |
1030 seconds (quettaseconds)
| isotope | half-life |
|---|
| class=unsortable | 1024 years | class=unsortable | 1030 seconds |
|---|
| tellurium-128 | 2.2yr | |
The half-life of tellurium-128 is over 160 trillion times greater than the
age of the universe, which is seconds.
[7] See also
External links
Notes and References
- Reaching the limits of nuclear stability, M. Thoennessen, Rep. Prog. Phys. 67 (2004), pp. 1187–1232, §2.3, .
- Web site: Periodic Table - Ptable .
- Discovery of New Isotope 241U and Systematic High-Precision Atomic Mass Measurements of Neutron-Rich Pa-Pu Nuclei Produced via Multinucleon Transfer Reactions . Niwase, T. . Watanabe, Y. X. . Hirayama, Y. . Mukai, M. . Schury, P. . Andreyev, A. N. . Hashimoto, T. . Iimura, S. . Ishiyama, H. . Ito, Y. . Jeong, S. C. . Kaji, D. . Kimura, S. . Miyatake, H. . Morimoto, K. . Moon, J.-Y. . Oyaizu, M. . Rosenbusch, M. . Taniguchi, A. . Wada, M. . 3 . Physical Review Letters . 130 . 13 . 132502-1–132502-6 . 2023 . 10.1103/PhysRevLett.130.132502. 37067317 . 2023PhRvL.130m2502N . 257976576 .
- News: Yirka . Bob . April 5, 2023 . Previously unknown isotope of uranium discovered . en . . 2023-04-12.
- Web site: Radiation . UAB . Accepted_HalfLives_Commonly_Used_Radioisotopes . Accepted_HalfLives_Commonly_Used_Radioisotopes . UAB Radiation Safety . 24 October 2024.
- is used in radiocarbon dating.
- Web site: Barely Radioactive Elements . Walker. John. fourmilab.ch. en. 2018-03-09.
