At

Astatine-212m

Protons (Z)

85

Neutrons (N)

127

Mass number

212

Half-Life

119.0 ms

Abundance

---

Mass

211.991 u

Mass Excess

-8,405.2 keV

Spin

(9-)

Discovered

1970

Binding energy per nucleon

7,797 keV

Neutron separation energy

4,829 keV

Proton separation energy

3,262 keV

Decay Mode

Decay chain

Astatine-212Z 85 · N 127119.0 ms
α100%
β⁺100%