Rn
Radon-199m
Protons (Z)
86
Neutrons (N)
113
Mass number
199
Half-Life
310.0 ms
Abundance
---
Mass
198.999 u
Mass Excess
-1,340.0 keV
Spin
13/2+
Discovered
1981
Binding energy per nucleon
7,740 keV
Neutron separation energy
8,181 keV
Proton separation energy
1,920 keV
Decay Mode
Decay chain
- RnRadon-199Z 86 · N 113310.0 ms
- α100%
- α94%
- β⁺~100%
- β⁺
- β⁺100%
- β⁺100%
- EC100%