(pa) protaktinyum

listen to the pronunciation of (pa) protaktinyum
التركية - الإنجليزية
(Nükleer Bilimler) protactinium
a chemical element (symbol Pa) with atomic number 91
{i} radioactive metallic element
a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
(pa) protaktinyum
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