I

Iodine-109

Protons (Z)

53

Neutrons (N)

56

Mass number

109

Half-Life

92.8 µs

Abundance

---

Mass

108.938 u

Mass Excess

-57,673.0 keV

Spin

(1/2+)

Discovered

1984

Binding energy per nucleon

8,220 keV

Neutron separation energy

12,974 keV

Proton separation energy

-820 keV

Decay Mode

Decay chain

Iodine-109Z 53 · N 5692.8 µs
p99.986%
α49%
β⁺100%
β⁺100%
β⁺100%
β⁺100%