Cs

Caesium-128

Protons (Z)

55

Neutrons (N)

73

Mass number

128

Half-Life

3.64 m

Abundance

---

Mass

127.908 u

Mass Excess

-85,932.0 keV

Spin

1+

Discovered

1951

Binding energy per nucleon

8,406 keV

Neutron separation energy

7,763 keV

Proton separation energy

4,900 keV

Decay Mode

β⁺Xenon-128100%

Decay chain

Caesium-128Z 55 · N 733.64 m
β⁺100%