Lutetium-172 (Lu-172)

Identity

Protons

71

Neutrons

101

Mass number

172

Mass

171.9 ± 2.5 u

Mass excess

-56.736 MeV

Spin

4-*

Stability

Half-life: 6.7 days

Natural occurrence

Not found in nature

Decays to

• positron emission → Yb-172

Produced by

• Hf-172