Y

Yttrium-87m

Protons (Z)

39

Neutrons (N)

48

Mass number

87

Half-Life

13.37 h

Abundance

---

Mass

86.911 u

Mass Excess

-82,637.6 keV

Spin

9/2+

Discovered

1940

Binding energy per nucleon

8,670 keV

Neutron separation energy

11,426 keV

Proton separation energy

5,403 keV

Decay Mode

Decay chain

Yttrium-87Z 39 · N 4813.37 h
γ98.43%
β⁺100%