Bi

Bismuth-191

Protons (Z)

83

Neutrons (N)

108

Mass number

191

Half-Life

12.4 s

Abundance

---

Mass

190.986 u

Mass Excess

-13,239.0 keV

Spin

9/2-

Discovered

1972

Binding energy per nucleon

7,801 keV

Neutron separation energy

10,714 keV

Proton separation energy

111 keV

Decay Mode

Decay chain

Bismuth-191Z 83 · N 10812.4 s
α51%
β⁺100%
β⁺100%
β⁺100%
β⁺100%
β⁺100%