Gd

Gadolinium-138

Protons (Z)

64

Neutrons (N)

74

Mass number

138

Half-Life

4.7 s

Abundance

---

Mass

137.94 u

Mass Excess

-55,660.0 keV

Spin

0+

Discovered

1985

Binding energy per nucleon

8,112 keV

Neutron separation energy

12,521 keV

Proton separation energy

2,803 keV

Decay Mode

β⁺Europium-138100%

Decay chain

Gadolinium-138Z 64 · N 744.7 s
β⁺100%
β⁺
β⁺100%
β⁺100%
β⁺100%
β⁺100%