At
Astatine-214m
Protons (Z)
85
Neutrons (N)
129
Mass number
214
Half-Life
265.0 ns
Abundance
---
Mass
213.996 u
Mass Excess
-3,321.0 keV
Spin
---
Discovered
1982
Binding energy per nucleon
7,776 keV
Neutron separation energy
4,812 keV
Proton separation energy
3,956 keV
Decay Mode
Decay chain
- AtAstatine-214Z 85 · N 129265.0 ns
- α100%
- β⁻~100%
- α100%