Bi

Bismuth-204m

Protons (Z)

83

Neutrons (N)

121

Mass number

204

Half-Life

13.0 ms

Abundance

---

Mass

203.979 u

Mass Excess

-19,841.0 keV

Spin

10-

Discovered

1974

Binding energy per nucleon

7,850 keV

Neutron separation energy

6,387 keV

Proton separation energy

2,344 keV

Decay Mode

γBismuth-204100%

Decay chain

Bismuth-204Z 83 · N 12113.0 ms
γ100%
β⁺100%