At

Astatine-206m

Protons (Z)

85

Neutrons (N)

121

Mass number

206

Half-Life

813.0 ns

Abundance

---

Mass

205.988 u

Mass Excess

-11,629.0 keV

Spin

(10-)

Discovered

1999

Binding energy per nucleon

7,805 keV

Neutron separation energy

6,715 keV

Proton separation energy

1,397 keV

Decay Mode

γAstatine-206100%

Decay chain

Astatine-206Z 85 · N 121813.0 ns
γ100%
β⁺99.1%
β⁺94.55%
β⁺100%