Lutetium-171 (Lu-171)

Identity

Protons

71

Neutrons

100

Mass number

171

Mass

170.9 ± 2.0 u

Mass excess

-57.828 MeV

Spin

7/2+*

Stability

Half-life: 8.25 days

Natural occurrence

Not found in nature

Decays to

• positron emission → Yb-171