At
Astatine-196m
Protons (Z)
85
Neutrons (N)
111
Mass number
196
Half-Life
20.0 ms
Abundance
---
Mass
195.996 u
Mass Excess
-3,950.0 keV
Spin
(10-)
Discovered
1996
Binding energy per nucleon
7,752 keV
Neutron separation energy
8,551 keV
Proton separation energy
122 keV
Decay Mode
- α→Bismuth-192100%
Decay chain
- AtAstatine-196Z 85 · N 11120.0 ms
- α100%
- β⁺88%
- β⁺~100%
- β⁺100%
- EC100%
- β⁺100%