Pb

Lead-204m

Protons (Z)

82

Neutrons (N)

122

Mass number

204

Half-Life

265.0 ns

Abundance

---

Mass

203.974 u

Mass Excess

-23,835.7 keV

Spin

4+

Discovered

1963

Binding energy per nucleon

7,874 keV

Neutron separation energy

7,121 keV

Proton separation energy

5,363 keV

Decay Mode

γLead-204100%

Decay chain

Lead-204Z 82 · N 122265.0 ns
γ100%