Example image of eyePlorer eyePlorer map for 'Collective names of groups of like elements': Categorization Chemical element International Union of Pure and Applied Chemistry IUPAC nomenclature Alkali metal Alkaline earth metal Nitrogen group Chalcogen Halogen Noble gas Lanthanoid Actinoid Rare earth element Transition metal Periodic table Metal Metalloid Nonmetal Platinum group Noble metals Heavy metal (chemistry) Native metal Post-transition metal Transuranium element Transactinide element Transplutonium element Minor actinide Superactinide Group (periodic table) Carbon group Chemical elements in East Asian languages