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Barium-138

Barium-138
Algemeen
Element barium (Ba)
Nuclide 138Ba
Aantal protonen 56
Aantal neutronen 82
Nuclidische gegevens
Nuclidenmassa 137,905247237 u
Spin 0+
Bindingsenergie 8,39342 MeV
Massaoverschot −88,261631 MeV
Isotopen van barium
Portaal  Portaalicoon   Scheikunde
Natuurkunde

Barium-138 of 138Ba is een stabiele isotoop van barium, een aardalkalimetaal. Het is een van de zes stabiele isotopen van het element, naast barium-132, barium-134, barium-135, barium-136 en barium-137. Daarnaast komt ook een langlevende radio-isotoop voor, namelijk barium-130. De abundantie op Aarde bedraagt 71,698%.

Barium-138 ontstaat onder meer bij het radioactief verval van cesium-138, lanthaan-138, cerium-138 en cerium-142.

 
 
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Barium-138
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