Yttrium-87 (Y-87)

Identity

Protons

39

Neutrons

48

Mass number

87

Mass

86.9 ± 1.2 u

Mass excess

-83.018 MeV

Spin

1/2-*

Stability

Half-life: 3.33 days

Natural occurrence

Not found in nature

Decays to

• positron emission → Sr-87