Cs

Caesium-119

Protons (Z)

55

Neutrons (N)

64

Mass number

119

Half-Life

43.0 s

Abundance

---

Mass

118.922 u

Mass Excess

-72,305.0 keV

Spin

9/2+

Discovered

1969

Binding energy per nucleon

8,317 keV

Neutron separation energy

11,967 keV

Proton separation energy

1,515 keV

Decay Mode

Decay chain

Caesium-119Z 55 · N 6443.0 s
β⁺~100%
β⁺100%
β⁺100%
β⁺100%
EC100%