At
Astatine-203n
Protons (Z)
85
Neutrons (N)
118
Mass number
203
Half-Life
9.77 µs
Abundance
---
Mass
202.989 u
Mass Excess
-9,833.0 keV
Spin
29/2+
Discovered
2018
Binding energy per nucleon
7,792 keV
Neutron separation energy
7,309 keV
Proton separation energy
-820 keV
Decay Mode
- γ→Astatine-203100%
Decay chain
- AtAstatine-203Z 85 · N 1189.77 µs
- γ100%
- β⁺69%
- β⁺99.89%
- β⁺100%
- EC100%