At

Astatine-205

Protons (Z)

85

Neutrons (N)

120

Mass number

205

Half-Life

26.9 m

Abundance

---

Mass

204.986 u

Mass Excess

-12,985.0 keV

Spin

9/2-

Discovered

1951

Binding energy per nucleon

7,810 keV

Neutron separation energy

9,181 keV

Proton separation energy

1,933 keV

Decay Mode

Decay chain

Astatine-205Z 85 · N 12026.9 m
β⁺90%
β⁺99.96%
β⁺100%
EC100%