Ba

Barium-140

Protons (Z)

56

Neutrons (N)

84

Mass number

140

Half-Life

12.75 d

Abundance

---

Mass

139.911 u

Mass Excess

-83,268.0 keV

Spin

0+

Discovered

1939

Binding energy per nucleon

8,353 keV

Neutron separation energy

6,425 keV

Proton separation energy

9,856 keV

Decay Mode

β⁻Lanthanum-140100%

Decay chain

Barium-140Z 56 · N 8412.75 d
β⁻100%
β⁻100%