At
Astatine-198
Protons (Z)
85
Neutrons (N)
113
Mass number
198
Half-Life
4.47 s
Abundance
---
Mass
197.993 u
Mass Excess
-6,709.0 keV
Spin
3+
Discovered
1967
Binding energy per nucleon
7,769 keV
Neutron separation energy
8,425 keV
Proton separation energy
605 keV
Decay Mode
Decay chain
- AtAstatine-198Z 85 · N 1134.47 s
- α97%
- β⁺~100%
- β⁺~100%
- β⁺100%
- EC100%
- β⁺100%