Sb

Antimony-123m

Protons (Z)

51

Neutrons (N)

72

Mass number

123

Half-Life

214.0 ns

Abundance

---

Mass

122.907 u

Mass Excess

-86,985.1 keV

Spin

19/2-

Discovered

2005

Binding energy per nucleon

8,454 keV

Neutron separation energy

6,722 keV

Proton separation energy

4,334 keV

Decay Mode

γAntimony-123100%

Decay chain

Antimony-123Z 51 · N 72214.0 ns
γ100%