Au

Gold-209

Protons (Z)

79

Neutrons (N)

130

Mass number

209

Half-Life

1.0 s

Abundance

---

Mass

208.998 u

Mass Excess

-2,230.0 keV

Spin

(3/2+)

Discovered

2010

Binding energy per nucleon

7,786 keV

Neutron separation energy

4,391 keV

Proton separation energy

9,019 keV

Decay Mode

Decay chain

Gold-209Z 79 · N 1301.0 s
β⁻
β⁻100%
β⁻100%
β⁻100%
α100%