Cs

Caesium-124m

Protons (Z)

55

Neutrons (N)

69

Mass number

124

Half-Life

6.41 s

Abundance

---

Mass

123.913 u

Mass Excess

-81,278.0 keV

Spin

(7+)

Discovered

1983

Binding energy per nucleon

8,380 keV

Neutron separation energy

8,305 keV

Proton separation energy

3,319 keV

Decay Mode

Decay chain

Caesium-124Z 55 · N 696.41 s
γ99.89%
β⁺100%