Dysprosium-159 (Dy-159)

Identity

Protons

66

Neutrons

93

Mass number

159

Mass

158.9 ± 1.5 u

Mass excess

-69.167 MeV

Spin

3/2-*

Stability

Half-life: 144 days

Natural occurrence

Not found in nature

Decays to

• electron capture → Tb-159