At
Astatine-225
Protons (Z)
85
Neutrons (N)
140
Mass number
225
Half-Life
3.0 s
Abundance
---
Mass
225.033 u
Mass Excess
30,300.0 keV
Spin
(1/2+)
Discovered
2010
Binding energy per nucleon
7,641 keV
Neutron separation energy
5,482 keV
Proton separation energy
6,899 keV
Decay Mode
Decay chain
- AtAstatine-225Z 85 · N 1403.0 s
- β⁻
- β⁻100%
- β⁻100%
- β⁻100%
- α~100%
- α~100%
- α99.992%
- β⁻97.91%
- α100%
- β⁻100%
- α100%