Fm
Fermium-253m
Protons (Z)
100
Neutrons (N)
153
Mass number
253
Half-Life
---
Abundance
---
Mass
253.085 u
Mass Excess
79,486.0 keV
Spin
(7/2+)
Discovered
---
Binding energy per nucleon
7,448 keV
Neutron separation energy
5,402 keV
Proton separation energy
5,093 keV
Decay Mode
- γ→Fermium-253
Decay chain
- FmFermium-253Z 100 · N 153Unknown
- γ
- EC88%
- α~100%
- β⁻~100%
- α~100%
- α~100%
- β⁻~100%
- α~100%
- α~100%
- β⁻100%
- α~100%
- α100%
- β⁻100%
- α~100%
- α~100%
- α99.992%
- β⁻97.91%
- α100%
- β⁻100%
- α100%