Pm

Promethium-134n

Protons (Z)

61

Neutrons (N)

73

Mass number

134

Half-Life

20.0 µs

Abundance

---

Mass

133.928 u

Mass Excess

-66,640.0 keV

Spin

(7-)

Discovered

2009

Binding energy per nucleon

8,212 keV

Neutron separation energy

9,301 keV

Proton separation energy

1,599 keV

Decay Mode

γPromethium-134100%

Decay chain

Promethium-134Z 61 · N 7320.0 µs
γ100%
β⁺100%
β⁺100%
β⁺100%
EC100%
β⁺100%