Rb

Rubidium-81m

Protons (Z)

37

Neutrons (N)

44

Mass number

81

Half-Life

30.5 m

Abundance

---

Mass

80.919 u

Mass Excess

-75,371.0 keV

Spin

9/2+

Discovered

1956

Binding energy per nucleon

8,644 keV

Neutron separation energy

11,267 keV

Proton separation energy

4,766 keV

Decay Mode

Decay chain

Rubidium-81Z 37 · N 4430.5 m
γ97.6%
β⁺100%
EC100%