Rn
Radon-212m
Protons (Z)
86
Neutrons (N)
126
Mass number
212
Half-Life
118.0 ns
Abundance
---
Mass
211.992 u
Mass Excess
-7,019.0 keV
Spin
6+
Discovered
1971
Binding energy per nucleon
7,787 keV
Neutron separation energy
6,335 keV
Proton separation energy
2,661 keV
Decay Mode
- γ→Radon-212100%
Decay chain
- RnRadon-212Z 86 · N 126118.0 ns
- γ100%
- α100%
- α~100%