praseodymium
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lanthanideelementmetalchemistryperiodic tablerare earthneodymiumceriumsamariumeuropiumgadoliniumterbiumdysprosiumholmiumerbiumthuliumytterbiumlutetiumlanthanumatomic numbervalenceelectronorbitalisotopeoxidationalloymagnetglasspigmentspectroscopylasercatalystmetallurgymineralmonazitebastnasiteoxidefluoridechloridenitridesulfideelectrolysisfractionationrefiningsmeltingconductivityparamagnetismdiamagnetismferromagnetismvalence electronchemical bondlatticecrystalphosphorluminescencefluorescenceabsorptionemissionwavelengthspectrumgreencolorantdopingsemiconductorsuperconductormetalloidtransition metalactinideatomic massmolar massstoichiometryreagentprecipitatesolutionsolubilityelectronegativityionizationplasmagasliquidsolid