At
Astatine-199
Protons (Z)
85
Neutrons (N)
114
Mass number
199
Half-Life
7.02 s
Abundance
---
Mass
198.991 u
Mass Excess
-8,823.0 keV
Spin
9/2-
Discovered
1967
Binding energy per nucleon
7,781 keV
Neutron separation energy
10,185 keV
Proton separation energy
639 keV
Decay Mode
Decay chain
- AtAstatine-199Z 85 · N 1147.02 s
- α89%
- β⁺~100%
- β⁺100%
- β⁺100%
- β⁺100%
- EC100%