Thulium-172 (Tm-172)

Identity

Protons

69

Neutrons

103

Mass number

172

Mass

171.9 ± 5.9 u

Mass excess

-57.374 MeV

Spin

2-

Stability

Half-life: 2.65 days

Natural occurrence

Not found in nature

Decays to

• beta minus → Yb-172

Produced by

• Er-172