Au

Gold-203m

Protons (Z)

79

Neutrons (N)

124

Mass number

203

Half-Life

140.0 µs

Abundance

---

Mass

202.976 u

Mass Excess

-22,502.0 keV

Spin

(11/2-)

Discovered

2005

Binding energy per nucleon

7,878 keV

Neutron separation energy

6,220 keV

Proton separation energy

7,099 keV

Decay Mode

γGold-203100%

Decay chain

Gold-203Z 79 · N 124140.0 µs
γ100%
β⁻100%
β⁻100%