element
Information about Einsteinium-252:

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    Mass-Energy Data:

    Atomic Mass:252.082972±0.000054amu
    Excess Mass (Δ):77.288139±0.050259MeV
    Binding Energy:1879.232222±0.050260MeV
    β- Decay Energy:0.477090±0.050521MeV
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:

  • Spin: (5-)
  • Half life: 471.7 days ( 4.07549×10+07 sec., λ = 1.70077×10-08 s-1)
  • Mode of decay:
    α
    to
    248
    97
    Bk
      (Q = 6.760 MeV)   Branch ratio: 76.00 %
  • Mode of decay:
    E.C.
    to
    252
    98
    Cf
      (Q = 1.260 MeV)   Branch ratio: 24.00 %
  • Mode of decay: β- to
    252
    100
    Fm
      (Q = 0.480 MeV)   Branch ratio: ~0.01 %

  • Possible parent nuclides:
    α from
    256
    101
    Md
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)