Periodic Table of Elements
Bk - Berkelium
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Nuclides / Isotopes
| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| Bk235 | 235.057 | 138 | Syn | ||||||
| Bk236 | 236.057 | 139 | Syn | ||||||
| Bk237 | 237.057 | 140 | Syn | ||||||
| Bk238 | 238.058 | 141 | Syn | 144s | ε | Cm238 | 5.000 | ||
| Bk239 | 239.058 | 142 | Syn | 7/2+ | |||||
| Bk240 | 240.06 | 143 | Syn | 4.8m | ε | Cm240 | ~100 | 3.940 | |
| Bk241 | 241.06 | 144 | Syn | 7/2+ | |||||
| Bk242 | 242.062 | 145 | Syn | 7m | SF | >0 | |||
| 7m | ε | Cm242 | 3.000 | ||||||
| Bk243 | 243.063 | 146 | Syn | 3/2- | 4.5h | ε | Cm243 | ~99.85 | 1.508 |
| 4.5h | α | Am239 | ~0.15 | 6.874 | |||||
| Bk244 | 244.0652 | 147 | Syn | 1- | 4.35h | ε | Cm244 | 99.99 | 2.260 |
| 4.35h | α | Am240 | 0.006 | 6.780 | |||||
| meta state 0.000MeV | Syn | 820ns | SF | <=100 | |||||
| Bk245 | 245.0664 | 148 | Syn | 3/2- | 4.94d | ε | Cm245 | 99.88 | 0.810 |
| 4.94d | α | Am241 | 0.12 | 6.455 | |||||
| Bk246 | 246.0687 | 149 | Syn | 2- | 1.8d | α | Am242 | <0.2 | 6.070 |
| 1.8d | ε | Cm246 | 1.350 | ||||||
| Bk247 | 247.0703 | 150 | Syn | 3/2- | 1380y | α | Am243 | <=100 | 5.889 |
| Bk248 | 248.0731 | 151 | Syn | 6+ | >9y | α | Am244 | >70 | 5.803 |
| meta state 0.000MeV | Syn | 1- | 23.7h | β- | Cf248 | 70 | 0.870 | ||
| 23.7h | ε | Cm248 | 30 | 0.717 | |||||
| 23.7h | α | Am244 | 5.803 | ||||||
| Bk249 | 249.075 | 152 | Syn | 7/2+ | 320d | α | Am245 | 0.0014 | 5.526 |
| 320d | SF | 4.7E -8 | |||||||
| 320d | β- | Cf249 | 0.125 | ||||||
| Bk250 | 250.0783 | 153 | Syn | 2- | 3.217h | β- | Cf250 | 1.780 | |
| Bk251 | 251.0808 | 154 | Syn | 3/2- | 55.6m | α | Am247 | ~1.0E -5 | 5.570 |
| 55.6m | β- | Cf251 | 1.093 | ||||||
| Bk252 | 252.084 | 155 | Syn | ||||||
| Bk253 | 253.087 | 156 | Syn | ||||||
| Bk254 | 254.091 | 157 | Syn | ||||||
| Nuclide | Potential Parent Nuclides |
|---|---|
| Bk235 | None known |
| Bk236 | None known |
| Bk237 | None known |
| Bk238 | None known |
| Bk239 | Cf239 (Syn) Es243 (Syn) |
| Bk240 | Es244 (Syn) |
| Bk241 | Cf241 (Syn) Es245 (Syn) |
| Bk242 | Es246 (Syn) Es247 (Syn) |
| Bk243 | Cf243 (Syn) |
| Bk244 | Es248 (Syn) |
| meta state 0.000MeV | None known |
| Bk245 | Cf245 (Syn) Es249 (Syn) |
| Bk246 | Cf246 (Syn) Es250 (Syn) Es250m (Syn) |
| Bk247 | Cf247 (Syn) Es251 (Syn) |
| Bk248 | Es252 (Syn) |
| meta state 0.000MeV | None known |
| Bk249 | Cm249 (Syn) Es253 (Syn) |
| Bk250 | Cm250 (Syn) Es254 (Syn) Es254m (Syn) |
| Bk251 | Cm251 (Syn) Es255 (Syn) |
| Bk252 | Cm252 (Syn) |
| Bk253 | None known |
| Bk254 | None known |
Key:
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