Fm
Fermium-247
Protons (Z)
100
Neutrons (N)
147
Mass number
247
Half-Life
31.0 s
Abundance
---
Mass
247.077 u
Mass Excess
71,670.0 keV
Spin
(7/2+)
Discovered
1967
Binding energy per nucleon
7,464 keV
Neutron separation energy
6,592 keV
Proton separation energy
3,439 keV
Decay Mode
Decay chain
- FmFermium-247Z 100 · N 14731.0 s
- α64%
- β⁺86%
- β⁺~100%
- α~100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- β⁻98.62%
- α100%
- α~100%
- α100%
- α~100%
- β⁻100%
- α~100%
- β⁻100%