Au

Gold-200m

Protons (Z)

79

Neutrons (N)

121

Mass number

200

Half-Life

18.7 h

Abundance

---

Mass

199.972 u

Mass Excess

-26,233.0 keV

Spin

12-

Discovered

1968

Binding energy per nucleon

7,893 keV

Neutron separation energy

5,211 keV

Proton separation energy

6,133 keV

Decay Mode

Decay chain

Gold-200Z 79 · N 12118.7 h
β⁻84%