Ra
Radium-201m
Protons (Z)
88
Neutrons (N)
113
Mass number
201
Half-Life
6.0 ms
Abundance
---
Mass
201.013 u
Mass Excess
12,200.0 keV
Spin
13/2+
Discovered
2005
Binding energy per nucleon
7,668 keV
Neutron separation energy
---
Proton separation energy
1,219 keV
Decay Mode
- α→Radon-197100%
Decay chain
- RaRadium-201Z 88 · N 1136.0 ms
- α100%
- α100%
- α100%
- β⁺99.58%
- β⁺100%
- β⁺100%
- β⁺~100%
- β⁺100%
- EC100%