Xe

Xenon-123m

Protons (Z)

54

Neutrons (N)

69

Mass number

123

Half-Life

5.49 µs

Abundance

---

Mass

122.909 u

Mass Excess

-85,063.0 keV

Spin

7/2-

Discovered

1981

Binding energy per nucleon

8,419 keV

Neutron separation energy

7,779 keV

Proton separation energy

6,273 keV

Decay Mode

γXenon-123100%

Decay chain

Xenon-123Z 54 · N 695.49 µs
γ100%
β⁺100%
β⁺100%