At
Astatine-191m
Protons (Z)
85
Neutrons (N)
106
Mass number
191
Half-Life
2.2 ms
Abundance
---
Mass
191.004 u
Mass Excess
3,922.0 keV
Spin
(7/2-)
Discovered
2003
Binding energy per nucleon
7,703 keV
Neutron separation energy
---
Proton separation energy
-1,196 keV
Decay Mode
Decay chain
- AtAstatine-191Z 85 · N 1062.2 ms
- α100%
- α100%
- β⁺
- β⁺88.3%
- β⁺99.45%
- β⁺~100%
- β⁺100%
- β⁺100%
- EC100%