Periodic Table of Elements
U - Uranium
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Nuclides / Isotopes
| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| U218 | 218.023 | 126 | Syn | 0+ | 1.5ms | α | Th214 | 8.790 | |
| U219 | 219.0249 | 127 | Syn | 42us | α | Th215 | 9.900 | ||
| U220 | 220.025 | 128 | Syn | 0+ | |||||
| U221 | 221.026 | 129 | Syn | ||||||
| U222 | 222.026 | 130 | Syn | 0+ | 1us | α | Th218 | 9.500 | |
| U223 | 223.0277 | 131 | Syn | 18us | α | Th219 | 8.940 | ||
| U224 | 224.0276 | 132 | Syn | 0+ | 0.9ms | α | Th220 | 8.620 | |
| U225 | 225.0294 | 133 | Syn | 95ms | α | Th221 | 8.020 | ||
| U226 | 226.0293 | 134 | Syn | 0+ | 0.35s | α | Th222 | 7.715 | |
| U227 | 227.0311 | 135 | Syn | 3/2+ | 1.1m | α | Th223 | 7.211 | |
| U228 | 228.0314 | 136 | Syn | 0+ | 9.1m | α | Th224 | >95 | 6.804 |
| 9.1m | ε | Pa228 | <5 | 0.307 | |||||
| U229 | 229.0335 | 137 | Syn | 3/2+ | 58m | ε | Pa229 | ~80 | 1.309 |
| 58m | α | Th225 | ~20 | 6.475 | |||||
| U230 | 230.0339 | 138 | Syn | 0+ | 20.8d | α | Th226 | 5.993 | |
| U231 | 231.0363 | 139 | Syn | 5/2- | 4.2d | ε | Pa231 | 0.360 | |
| meta state 0.000MeV | Syn | 2+, 5/2+ | 4.2d | α | Th227 | ~0 | 5.550 | ||
| U232 | 232.0372 | 140 | Syn | 0+ | 68.9y | α | Th228 | 5.414 | |
| 68.9y | SF | ||||||||
| U233 | 233.0396 | 141 | Syn | 5/2+ | 159200y | SF | <6.0E -9 | ||
| 159200y | α | Th229 | 4.909 | ||||||
| U234 | 234.041 | 142 | 0.006 | 0+ | 245500y | SF | 1.7E -9 | ||
| 245500y | α | Th230 | 4.859 | ||||||
| U235 | 235.0439 | 143 | 0.72 | 7/2- 7 | 7.038E 8y | SF | 7.0E -9 | ||
| 7.038E 8y | α | Th231 | 4.679 | ||||||
| meta state 0.000MeV | Syn | 1/2+ | ~25m | IT | U235 | ||||
| U236 | 236.0456 | 144 | Syn | 0+ | 2.342E 7y | SF | 9.6E -8 | ||
| 2.342E 7y | α | Th232 | 4.572 | ||||||
| meta state 0.000MeV | Syn | 121ns | SF | 0.01 | |||||
| U237 | 237.0487 | 145 | Syn | 1/2+ | 6.75d | β- | Np237 | 0.519 | |
| U238 | 238.0508 | 146 | 99.275 | 0+ | 4.468E 9y | SF | 0.00005 | ||
| 4.468E 9y | α | Th234 | 4.270 | ||||||
| U239 | 239.0543 | 147 | Syn | 5/2+ | 23.45m | β- | Np239 | 1.265 | |
| U240 | 240.0566 | 148 | Syn | 0+ | 14.1h | β- | Np240 | 0.388 | |
| U241 | 241.06 | 149 | Syn | ||||||
| U242 | 242.063 | 150 | Syn | 0+ | 16.8m | β- | Np242 | ||
| Nuclide | Potential Parent Nuclides |
|---|---|
| U218 | None known |
| U219 | None known |
| U220 | None known |
| U221 | None known |
| U222 | None known |
| U223 | None known |
| U224 | Pu228 (Syn) |
| U225 | Pu229 (Syn) |
| U226 | Pu230 (Syn) |
| U227 | None known |
| U228 | Np228 (Syn) Pu232 (Syn) |
| U229 | Np229 (Syn) Pu233 (Syn) |
| U230 | Np230 (Syn) Pa230 (Syn) Pu234 (Syn) |
| U231 | Np231 (Syn) Pu235 (Syn) |
| meta state 0.000MeV | None known |
| U232 | Np232 (Syn) Pa232 (Syn) Pu236 (Syn) |
| U233 | Np233 (Syn) Pa233 (Syn) Pu237 (Syn) |
| U234 | Np234 (Syn) Pa234 (Syn) Pa234m (Syn) Pu238 (Syn) |
| U235 | Np235 (Syn) Pa235 (Syn) Pu239 (Syn) U235m (Syn) |
| meta state 0.000MeV | None known |
| U236 | Np236 (Syn) Np236m (Syn) Pa236 (Syn) Pu240 (Syn) |
| meta state 0.000MeV | None known |
| U237 | Pa237 (Syn) Pu241 (Syn) |
| U238 | Pa238 (Syn) Pu242 (Syn) |
| U239 | None known |
| U240 | Pu244 (Syn) |
| U241 | None known |
| U242 | None known |
Key:
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