Rb

Rubidium-91

Protons (Z)

37

Neutrons (N)

54

Mass number

91

Half-Life

58.2 s

Abundance

---

Mass

90.917 u

Mass Excess

-77,745.0 keV

Spin

3/2-

Discovered

1951

Binding energy per nucleon

8,608 keV

Neutron separation energy

6,450 keV

Proton separation energy

10,075 keV

Decay Mode

Decay chain

Rubidium-91Z 37 · N 5458.2 s
β⁻100%
β⁻100%
β⁻100%