Y

Yttrium-91

Protons (Z)

39

Neutrons (N)

52

Mass number

91

Half-Life

58.51 d

Abundance

---

Mass

90.907 u

Mass Excess

-86,351.3 keV

Spin

1/2-

Discovered

1943

Binding energy per nucleon

8,685 keV

Neutron separation energy

7,926 keV

Proton separation energy

7,689 keV

Decay Mode

β⁻Zirconium-91100%

Decay chain

Yttrium-91Z 39 · N 5258.51 d
β⁻100%