Y

Yttrium-81

Protons (Z)

39

Neutrons (N)

42

Mass number

81

Half-Life

1.17 m

Abundance

---

Mass

80.929 u

Mass Excess

-65,713.0 keV

Spin

(5/2+)

Discovered

1981

Binding energy per nucleon

8,506 keV

Neutron separation energy

12,636 keV

Proton separation energy

2,691 keV

Decay Mode

β⁺Strontium-81100%

Decay chain

Yttrium-81Z 39 · N 421.17 m
β⁺100%
β⁺100%
β⁺100%
EC100%