Au

Gold-204m

Protons (Z)

79

Neutrons (N)

125

Mass number

204

Half-Life

2.1 µs

Abundance

---

Mass

203.982 u

Mass Excess

-16,570.0 keV

Spin

(16+)

Discovered

2008

Binding energy per nucleon

7,850 keV

Neutron separation energy

1,498 keV

Proton separation energy

4,349 keV

Decay Mode

γGold-204100%

Decay chain

Gold-204Z 79 · N 1252.1 µs
γ100%
β⁻100%