In

Indium-123m

Protons (Z)

49

Neutrons (N)

74

Mass number

123

Half-Life

47.4 s

Abundance

---

Mass

122.911 u

Mass Excess

-83,102.0 keV

Spin

1/2-

Discovered

1960

Binding energy per nucleon

8,435 keV

Neutron separation energy

7,603 keV

Proton separation energy

9,779 keV

Decay Mode

β⁻Tin-123100%

Decay chain

Indium-123Z 49 · N 7447.4 s
β⁻100%
β⁻100%