I

Iodine-133m

Protons (Z)

53

Neutrons (N)

80

Mass number

133

Half-Life

9.0 s

Abundance

---

Mass

132.91 u

Mass Excess

-84,223.0 keV

Spin

(19/2-)

Discovered

1970

Binding energy per nucleon

8,393 keV

Neutron separation energy

6,590 keV

Proton separation energy

6,324 keV

Decay Mode

γIodine-133100%

Decay chain

Iodine-133Z 53 · N 809.0 s
γ100%
β⁻100%
β⁻100%