Ra
Radium-203m
Protons (Z)
88
Neutrons (N)
115
Mass number
203
Half-Life
25.0 ms
Abundance
---
Mass
203.009 u
Mass Excess
8,848.0 keV
Spin
13/2+
Discovered
1996
Binding energy per nucleon
7,689 keV
Neutron separation energy
8,298 keV
Proton separation energy
1,543 keV
Decay Mode
Decay chain
- RaRadium-203Z 88 · N 11525.0 ms
- α100%
- α100%
- α94%
- β⁺~100%
- β⁺
- β⁺100%
- β⁺100%
- EC100%