| Nuc- lide | Atomic Mass | NN | Abun % | Spin | Half Life | DM | DT | BR % | Decay Energy (MeV) |
|---|---|---|---|---|---|---|---|---|---|
| Es240 | 240.069 | 141 | Syn | ||||||
| Es241 | 241.069 | 142 | Syn | 9s | |||||
| Es242 | 242.07 | 143 | Syn | 40s | ε | Cf242 | 5.600 | ||
| Es243 | 243.07 | 144 | Syn | 21s | ε | Cf243 | <=70 | 4.000 | |
| 21s | α | Bk239 | >=30 | 8.072 | |||||
| Es244 | 244.07 | 145 | Syn | 37s | ε | Cf244 | 96 | 4.560 | |
| 37s | α | Bk240 | 4 | 7.950 | |||||
| Es245 | 245.071 | 146 | Syn | 3/2- | 1.1m | ε | Cf245 | 60 | 3.050 |
| 1.1m | α | Bk241 | 7.4 | 7.909 | |||||
| Es246 | 246.0729 | 147 | Syn | 4-, 6+ | 7.7m | ε | Cf246 | 90.1 | 3.880 |
| 7.7m | α | Bk242 | 9.9 | 7.740 | |||||
| Es247 | 247.0737 | 148 | Syn | 7/2+ | 4.55m | ε | Cf247 | ~93 | 2.480 |
| 4.55m | α | Bk242 | ~7 | 7.490 | |||||
| Es248 | 248.0755 | 149 | Syn | 2-, 0+ | 27m | ε | Cf248 | >99 | 3.060 |
| 27m | α | Bk244 | ~0.25 | 7.166 | |||||
| Es249 | 249.0764 | 150 | Syn | 7/2+ | 102.2m | ε | Cf249 | 99.43 | 1.450 |
| 102.2m | α | Bk245 | 0.57 | 6.940 | |||||
| Es250 | 250.079 | 151 | Syn | 6+ | 8.6h | ε | Cf250 | >97 | 2.100 |
| 8.6h | α | Bk246 | <3 | 6.880 | |||||
| meta state 0.000MeV | Syn | 1- | 2.22h | ε | Cf250 | >=99 | 2.100 | ||
| 2.22h | α | Bk246 | <=1 | 6.880 | |||||
| Es251 | 251.08 | 152 | Syn | 3/2- | 33h | ε | Cf251 | 99.51 | 0.376 |
| 33h | α | Bk247 | 0.49 | 6.597 | |||||
| Es252 | 252.083 | 153 | Syn | 5- | 471.7d | α | Bk248 | 76 | 6.760 |
| 471.7d | ε | Cf252 | 24 | 1.260 | |||||
| 471.7d | β- | Fm252 | ~0.01 | 0.480 | |||||
| Es253 | 253.0848 | 154 | Syn | 7/2+ | 20.47d | SF | 8.7E -6 | ||
| 20.47d | α | Bk249 | 6.739 | ||||||
| Es254 | 254.088 | 155 | Syn | 7+ | 275.7d | ε | Cf254 | <0.0001 | 0.654 |
| 275.7d | β- | Fm254 | 1.7E -6 | 1.090 | |||||
| 275.7d | α | Bk250 | 6.628 | ||||||
| meta state 0.078MeV | Syn | 2+ | 39.3h | β- | Fm254 | 98 | 1.168 | ||
| 39.3h | IT | Es254 | <3 | 0.078 | |||||
| 39.3h | α | Bk250 | 0.33 | 6.696 | |||||
| 39.3h | ε | Cf254 | 0.08 | 0.732 | |||||
| 39.3h | SF | <0.05 | |||||||
| Es255 | 255.0903 | 156 | Syn | 7/2+ | 39.8d | β- | Fm255 | 92 | 0.288 |
| 39.8d | α | Bk251 | 8 | 6.436 | |||||
| 39.8d | SF | 0.0041 | |||||||
| Es256 | 256.094 | 157 | Syn | 1+ | 25.4m | β- | Fm256 | 1.670 | |
| meta state 0.000MeV | Syn | 8+ | ~7.6h | β- | Fm256 | 1.670 | |||
| Es257 | 257.096 | 158 | Syn | SF | |||||
| Nuclide | Potential Parent Nuclides |
|---|---|
| Es240 | None known |
| Es241 | None known |
| Es242 | None known |
| Es243 | Md247 (Syn) |
| Es244 | Md248 (Syn) |
| Es245 | Md249 (Syn) |
| Es246 | Fm246 (Syn) Md250 (Syn) |
| Es247 | Fm247 (Syn) Md251 (Syn) |
| Es248 | Fm248 (Syn) |
| Es249 | Fm249 (Syn) |
| Es250 | Fm250 (Syn) |
| meta state 0.000MeV | None known |
| Es251 | Fm251 (Syn) Md255 (Syn) |
| Es252 | Md256 (Syn) |
| Es253 | Cf253 (Syn) Fm253 (Syn) Md257 (Syn) |
| Es254 | Es254m (Syn) Md258m (Syn) |
| meta state 0.078MeV | None known |
| Es255 | Cf255 (Syn) Md259 (Syn) |
| Es256 | Cf256 (Syn) Md260 (Syn) |
| meta state 0.000MeV | None known |
| Es257 | None known |
Key:
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Kenneth Barbalace. Periodic Table of Elements - Es - Einsteinium. EnvironmentalChemistry.com. 1995 - 2024. Accessed on-line: 4/19/2024
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