francium
Related Words
elementalkali metalcesiumrubidiumpotassiumsodiumlithiumperiodgroupvalenceelectronprotonneutronnucleusisotoperadioactivitydecayhalf liferadiationalpha particlebeta particlegamma rayactinidelanthanidehalogennoble gaselectronegativityionizationreactivityoxidationreductionchemistryphysicsatomic numberatomic massperiodic tablemetalmetalloidnonmetalcationanionbondmoleculeatomplasmaliquidsolidgasdensitymelting pointboiling pointinstabilitytransmutationuraniumradiumfluorinechlorinebromineiodineastatinevalence shellorbitalquantumspectroscopylaboratorysynthesisfractionationabundancetrace element