At
Astatine-200
Protons (Z)
85
Neutrons (N)
115
Mass number
200
Half-Life
43.2 s
Abundance
---
Mass
199.99 u
Mass Excess
-8,988.0 keV
Spin
(3+)
Discovered
1963
Binding energy per nucleon
7,784 keV
Neutron separation energy
8,236 keV
Proton separation energy
1,038 keV
Decay Mode
Decay chain
- AtAstatine-200Z 85 · N 11543.2 s
- α52%
- β⁺~100%
- β⁺~100%
- β⁺100%