Au

Gold-205m

Protons (Z)

79

Neutrons (N)

126

Mass number

205

Half-Life

6.0 s

Abundance

---

Mass

204.981 u

Mass Excess

-17,660.0 keV

Spin

(11/2-)

Discovered

2009

Binding energy per nucleon

7,856 keV

Neutron separation energy

5,341 keV

Proton separation energy

7,329 keV

Decay Mode

Decay chain

Gold-205Z 79 · N 1266.0 s
γ
β⁻100%
β⁻100%