100-Fm-256


Spin 
     Level energy(keV)   Spin & Parity       
     ----------------------------------------
       ground state      0+
Mass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer Chinese Physics C36 p. 1603-2014, December 2012) 
     256.091774469 ± 0.000007798 (amu)  [mass excess = 85487.368 ± 7.264 (keV) ]
Beta-decay energy (calculated as M(A,Z)-M(A,Z+1), taken from Ame2012) 
     -1969 ± 123 (keV) [derived from systematical trend]
Decay data(Chart of the Nuclides 2014) 
     Decay mode     Half-life 
       A            157.6 M 13
Evaluated Data Libraries 
     Links to the libraries.

Parent Nuclides by Reactions in JENDL-4.0 
     Fm-255 (Z=100, A=255), MT=102 (n,γ)