At
Astatine-197n
Protons (Z)
85
Neutrons (N)
112
Mass number
197
Half-Life
1.3 µs
Abundance
---
Mass
196.994 u
Mass Excess
-6,044.0 keV
Spin
13/2+
Discovered
1999
Binding energy per nucleon
7,764 keV
Neutron separation energy
10,205 keV
Proton separation energy
-136 keV
Decay Mode
- γ→Astatine-197100%
Decay chain
- AtAstatine-197Z 85 · N 1121.3 µs
- γ100%
- α96.1%
- β⁺96.5%
- β⁺
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%