Pr

Praseodymium-129m

Protons (Z)

59

Neutrons (N)

70

Mass number

129

Half-Life

26.0 µs

Abundance

---

Mass

128.926 u

Mass Excess

-69,390.0 keV

Spin

(11/2-)

Discovered

1997

Binding energy per nucleon

8,251 keV

Neutron separation energy

11,130 keV

Proton separation energy

1,145 keV

Decay Mode

γPraseodymium-129100%

Decay chain

Praseodymium-129Z 59 · N 7026.0 µs
γ100%
β⁺100%
β⁺100%
β⁺100%
β⁺100%
β⁺100%