Isotopes of Barium

Notes

There are twenty-two isotopes known, but most of these are highly radioactive and have half-lifes in the several millisecond to several minute range.

Notable Isotopes

130Ba [74 neutrons]

Abundance: 0.106%

Stable with 74 neutrons

132Ba [76 neutrons]

Abundance: 0.101%

Stable with 76 neutrons

133Ba [77 neutrons]

Abundance: synthetic

Half life: 10.51 years [ Electron Capture ]

Decay Energy: 0.517 MeV

Decays to 133Cs.

134Ba [78 neutrons]

Abundance: 2.417%

Stable with 78 neutrons

135Ba [79 neutrons]

Abundance: 6.592%

Stable with 79 neutrons

136Ba [80 neutrons]

Abundance: 7.854%

Stable with 80 neutrons

137Ba [81 neutrons]

Abundance: 11.23%

Stable with 81 neutrons

138Ba [82 neutrons]

Abundance: 71.7%

Stable with 82 neutrons