Ra

Radium-219m

Protons (Z)

88

Neutrons (N)

131

Mass number

219

Half-Life

10.0 ms

Abundance

---

Mass

219.01 u

Mass Excess

9,411.0 keV

Spin

(11/2+)

Discovered

2018

Binding energy per nucleon

7,714 keV

Neutron separation energy

5,306 keV

Proton separation energy

4,937 keV

Decay Mode

Decay chain

Radium-219Z 88 · N 13110.0 ms
α100%
α100%
α100%