Chemical Elements & Metals
20 entries in the Chemical Elements & Metals compendium.
PalladiumRare platinum-group metal used in catalytic converters and jewelry.PhosphorusOften cited as the first element discovered not known in antiquity, essential to life.PlatinumA dense, unreactive precious metal used in catalysis and jewelry.PlutoniumA radioactive actinide metal used in nuclear weapons and reactors.PoloniumHighly radioactive element discovered by the Curies.PotassiumSoft alkali metal essential to life and widely used in fertilizers.PraseodymiumA rare-earth element known for its green salts and optical filtering.PromethiumA rare, radioactive lanthanide with no stable isotopes.ProtactiniumRare radioactive element used in ocean science and nuclear research.RadiumRadioactive alkaline earth metal discovered by the Curies.RadonRadioactive noble gas; second leading cause of lung cancer.RheniumRhenium is a rare, high-melting transition metal used in superalloys and catalysts.RhodiumRare noble metal used in catalytic converters and jewelry plating.RubidiumRubidium (Rb, atomic number 37) is a chemical element. It belongs to the alkali metal grouRutheniumRuthenium is the chemical element with the symbol Ru and atomic number 44. This rare transSamariumA lanthanide metal used in magnets, medicine, and nuclear reactors.ScandiumA rare-earth element used primarily in aluminium alloys.SeleniumEssential trace element and semiconductor discovered in 1817.SiliconElemental silicon is the basis of the Silicon Age.SodiumSoft, reactive alkali metal essential for life.
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