At

Astatine-207m

Protons (Z)

85

Neutrons (N)

122

Mass number

207

Half-Life

108.0 ns

Abundance

---

Mass

206.988 u

Mass Excess

-11,110.0 keV

Spin

25/2+

Discovered

1981

Binding energy per nucleon

7,804 keV

Neutron separation energy

6,742 keV

Proton separation energy

210 keV

Decay Mode

γAstatine-207100%

Decay chain

Astatine-207Z 85 · N 122108.0 ns
γ100%
β⁺90%
β⁺~100%
β⁺100%