Y

Yttrium-90m

Protons (Z)

39

Neutrons (N)

51

Mass number

90

Half-Life

3.23 h

Abundance

---

Mass

89.908 u

Mass Excess

-85,814.9 keV

Spin

7+

Discovered

1961

Binding energy per nucleon

8,686 keV

Neutron separation energy

6,175 keV

Proton separation energy

6,895 keV

Decay Mode

Decay chain

Yttrium-90Z 39 · N 513.23 h
γ99.998%
β⁻100%