Eu

Europium-137

Protons (Z)

63

Neutrons (N)

74

Mass number

137

Half-Life

8.4 s

Abundance

---

Mass

136.935 u

Mass Excess

-60,146.0 keV

Spin

(5/2+)

Discovered

1982

Binding energy per nucleon

8,151 keV

Neutron separation energy

11,977 keV

Proton separation energy

624 keV

Decay Mode

β⁺Samarium-137100%

Decay chain

Europium-137Z 63 · N 748.4 s
β⁺100%
β⁺100%
β⁺
β⁺100%
β⁺100%
β⁺100%
EC100%