Fm
Fermium-250m
Protons (Z)
100
Neutrons (N)
150
Mass number
250
Half-Life
1.92 s
Abundance
---
Mass
250.081 u
Mass Excess
75,271.0 keV
Spin
(8-)
Discovered
1973
Binding energy per nucleon
7,457 keV
Neutron separation energy
6,319 keV
Proton separation energy
3,198 keV
Decay Mode
- SF
Decay chain
- FmFermium-250Z 100 · N 1501.92 s
- γ100%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α~100%
- α100%
- α99.98%
- β⁻100%
- β⁻99.976%
- α100%
- β⁻~100%
- β⁻~100%
- α100%