Thulium-168 (Tm-168)

Identity

Protons

69

Neutrons

99

Mass number

168

Mass

167.9 ± 1.8 u

Mass excess

-61.312 MeV

Spin

3+*

Stability

Half-life: 93.1 days

Natural occurrence

Not found in nature

Decays to

• positron emission 100.0 % → Er-168
• beta minus 0.010 % → Yb-168