Fermium-251

• β⁺→Einsteinium-25198.2%
• α→Californium-2471.8%

Decay chain

1. FmFermium-251Z 100 · N 1515.3 h
2. β⁺98.2%
   EsEinsteinium-251Z 99 · N 1521.38 d
3. EC99.5%
   CfCalifornium-251Z 98 · N 153898.0 y
4. α100%
   CmCurium-247Z 96 · N 15115.6 My
5. α100%
   PuPlutonium-243Z 94 · N 1494.96 h
6. β⁻100%
   AmAmericium-243Z 95 · N 1487.35 ky
7. α~100%
   NpNeptunium-239Z 93 · N 1462.36 d
8. β⁻100%
   PuPlutonium-239Z 94 · N 14524.11 ky
9. α~100%
   UUranium-235Z 92 · N 143704.0 My
10. α~100%
    ThThorium-231Z 90 · N 1411.06 d
11. β⁻100%
    PaProtactinium-231Z 91 · N 14032.65 ky
12. α~100%
    AcActinium-227Z 89 · N 13821.77 y
13. β⁻98.62%
    ThThorium-227Z 90 · N 13718.69 d
14. α100%
    RaRadium-223Z 88 · N 13511.44 d
15. α~100%
    RnRadon-219Z 86 · N 1333.96 s
16. α100%
    PoPolonium-215Z 84 · N 1311.78 ms
17. α~100%
    PbLead-211Z 82 · N 12936.16 m
18. β⁻100%
    BiBismuth-211Z 83 · N 1282.14 m
19. α~100%
    TlThallium-207Z 81 · N 1264.77 m
20. β⁻100%
    PbLead-207Z 82 · N 125Stable