Rn
Radon-222
Protons (Z)
86
Neutrons (N)
136
Mass number
222
Half-Life
3.82 d
Abundance
---
Mass
222.018 u
Mass Excess
16,372.0 keV
Spin
0+
Discovered
1899
Binding energy per nucleon
7,694 keV
Neutron separation energy
6,170 keV
Proton separation energy
7,700 keV
Decay Mode
- α→Polonium-218100%
Decay chain
- RnRadon-222Z 86 · N 1363.82 d
- α100%
- α99.98%
- β⁻100%
- β⁻99.976%
- α100%
- β⁻~100%
- β⁻~100%
- α100%