Rb

Rubidium-87

Protons (Z)

37

Neutrons (N)

50

Mass number

87

Half-Life

49.7 Gy

Abundance

27.83%

Mass

86.909 u

Mass Excess

-84,597.802 keV

Spin

3/2-

Discovered

1921

Binding energy per nucleon

8,711 keV

Neutron separation energy

9,922 keV

Proton separation energy

8,621 keV

Decay Mode

β⁻Strontium-87100%

Decay chain

Rubidium-87Z 37 · N 5049.7 Gy
β⁻100%