Bi

Bismuth-208m

Protons (Z)

83

Neutrons (N)

125

Mass number

208

Half-Life

2.58 ms

Abundance

---

Mass

207.981 u

Mass Excess

-17,299.1 keV

Spin

10-

Discovered

1961

Binding energy per nucleon

7,842 keV

Neutron separation energy

5,316 keV

Proton separation energy

2,136 keV

Decay Mode

γBismuth-208100%

Decay chain

Bismuth-208Z 83 · N 1252.58 ms
γ100%
β⁺100%