Rb

Rubidium-77

Protons (Z)

37

Neutrons (N)

40

Mass number

77

Half-Life

3.78 m

Abundance

---

Mass

76.93 u

Mass Excess

-64,830.5 keV

Spin

3/2-

Discovered

1972

Binding energy per nucleon

8,537 keV

Neutron separation energy

12,423 keV

Proton separation energy

3,105 keV

Decay Mode

β⁺Krypton-77100%

Decay chain

Rubidium-77Z 37 · N 403.78 m
β⁺100%
β⁺100%
β⁺100%