promethium
Related Words
elementlanthaniderare earthmetalradioisotoperadiationnucleusprotonneutronelectronisotopehalf lifedecaybeta decaygamma rayatomic numberatomic masschemistryphysicsnuclear physicsneodymiumsamariumceriumpraseodymiumeuropiumgadoliniumterbiumdysprosiumholmiumerbiumthuliumytterbiumlutetiumlanthanumactinidethoriumuraniumplutoniumfissionfusiontransmutationvalenceoxidation stateioncationanionorbitalspectroscopyluminescencephosphorescencefluorescencebatteryreactormoderatorshieldingtoxicityradioactivitymetalloidalloycompoundoxidefluoridechloridebromideiodide