Ac

Actinium-208

Protons (Z)

89

Neutrons (N)

119

Mass number

208

Half-Life

97.0 ms

Abundance

---

Mass

208.012 u

Mass Excess

10,760.0 keV

Spin

3+

Discovered

1994

Binding energy per nucleon

7,685 keV

Neutron separation energy

8,461 keV

Proton separation energy

39 keV

Decay Mode

Decay chain

Actinium-208Z 89 · N 11997.0 ms
α100%
α96%
α52%
β⁺~100%
β⁺~100%
β⁺100%