Ba

Barium-137

Protons (Z)

56

Neutrons (N)

81

Mass number

137

Half-Life

Stable

Abundance

11.23%

Mass

136.906 u

Mass Excess

-87,721.4 keV

Spin

3/2+

Discovered

1932

Binding energy per nucleon

8,392 keV

Neutron separation energy

6,906 keV

Proton separation energy

8,671 keV

Decay Mode

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