Ra
Radium-211m
Protons (Z)
88
Neutrons (N)
123
Mass number
211
Half-Life
9.5 µs
Abundance
---
Mass
211.002 u
Mass Excess
2,030.0 keV
Spin
13/2+
Discovered
2004
Binding energy per nucleon
7,735 keV
Neutron separation energy
6,484 keV
Proton separation energy
1,915 keV
Decay Mode
- γ→Radium-211100%
Decay chain
- RaRadium-211Z 88 · N 1239.5 µs
- γ100%
- α100%
- β⁺79%
- β⁺90%
- β⁺~100%
- β⁺100%