At
Astatine-202m
Protons (Z)
85
Neutrons (N)
117
Mass number
202
Half-Life
3.03 m
Abundance
---
Mass
201.989 u
Mass Excess
-10,401.0 keV
Spin
7+
Discovered
1992
Binding energy per nucleon
7,794 keV
Neutron separation energy
7,683 keV
Proton separation energy
1,169 keV
Decay Mode
Decay chain
- AtAstatine-202Z 85 · N 1173.03 m
- β⁺91.5%
- β⁺98.08%
- β⁺~100%
- EC100%
- EC100%