Thulium-170 (Tm-170)

Identity

Protons

69

Neutrons

101

Mass number

170

Mass

169.94 ± 0.79 u

Mass excess

-59.795 MeV

Spin

1-*

Stability

Half-life: 129 days

Natural occurrence

Not found in nature

Decays to

• beta minus 99.9 % → Yb-170
• electron capture 0.13 % → Er-170