Y

Yttrium-91m

Protons (Z)

39

Neutrons (N)

52

Mass number

91

Half-Life

49.71 m

Abundance

---

Mass

90.908 u

Mass Excess

-85,795.7 keV

Spin

9/2+

Discovered

1953

Binding energy per nucleon

8,679 keV

Neutron separation energy

7,370 keV

Proton separation energy

7,134 keV

Decay Mode

Decay chain

Yttrium-91Z 39 · N 5249.71 m
γ100%
β⁻100%