Fm
Fermium-248
Protons (Z)
100
Neutrons (N)
148
Mass number
248
Half-Life
34.5 s
Abundance
---
Mass
248.077 u
Mass Excess
71,898.0 keV
Spin
0+
Discovered
1958
Binding energy per nucleon
7,466 keV
Neutron separation energy
7,843 keV
Proton separation energy
3,969 keV
Decay Mode
- SF0.1%
Decay chain
- FmFermium-248Z 100 · N 14834.5 s
- α~100%
- α75%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α100%
- α100%
- β⁻100%
- β⁻64.046%
- α100%