Eu

Europium-138

Protons (Z)

63

Neutrons (N)

75

Mass number

138

Half-Life

5.0 s

Abundance

---

Mass

137.934 u

Mass Excess

-61,750.0 keV

Spin

(2-)

Discovered

1982

Binding energy per nucleon

8,162 keV

Neutron separation energy

9,675 keV

Proton separation energy

1,047 keV

Decay Mode

β⁺Samarium-138

Decay chain

Europium-138Z 63 · N 755.0 s
β⁺
β⁺100%
β⁺100%
β⁺100%
β⁺100%