Explore all 118 named chemical elements. Click any element to open its engineering-focused guide covering periodic-table position, applications, material context and safety considerations.
1HHydrogen2HeHelium3LiLithium4BeBeryllium5BBoron6CCarbon7NNitrogen8OOxygen9FFluorine10NeNeon11NaSodium12MgMagnesium13AlAluminum14SiSilicon15PPhosphorus16SSulfur17ClChlorine18ArArgon19KPotassium20CaCalcium21ScScandium22TiTitanium23VVanadium24CrChromium25MnManganese26FeIron27CoCobalt28NiNickel29CuCopper30ZnZinc31GaGallium32GeGermanium33AsArsenic34SeSelenium35BrBromine36KrKrypton37RbRubidium38SrStrontium39YYttrium40ZrZirconium41NbNiobium42MoMolybdenum43TcTechnetium44RuRuthenium45RhRhodium46PdPalladium47AgSilver48CdCadmium49InIndium50SnTin51SbAntimony52TeTellurium53IIodine54XeXenon55CsCesium56BaBarium57–71La–LuLanthanides72HfHafnium73TaTantalum74WTungsten75ReRhenium76OsOsmium77IrIridium78PtPlatinum79AuGold80HgMercury81TlThallium82PbLead83BiBismuth84PoPolonium85AtAstatine86RnRadon87FrFrancium88RaRadium89–103Ac–LrActinides104RfRutherfordium105DbDubnium106SgSeaborgium107BhBohrium108HsHassium109MtMeitnerium110DsDarmstadtium111RgRoentgenium112CnCopernicium113NhNihonium114FlFlerovium115McMoscovium116LvLivermorium117TsTennessine118OgOganesson
Lanthanides
57LaLanthanum58CeCerium59PrPraseodymium60NdNeodymium61PmPromethium62SmSamarium63EuEuropium64GdGadolinium65TbTerbium66DyDysprosium67HoHolmium68ErErbium69TmThulium70YbYtterbium71LuLutetiumActinides
89AcActinium90ThThorium91PaProtactinium92UUranium93NpNeptunium94PuPlutonium95AmAmericium96CmCurium97BkBerkelium98CfCalifornium99EsEinsteinium100FmFermium101MdMendelevium102NoNobelium103LrLawrencium
Alkali metalsAlkaline earthTransitionPost-transitionMetalloidsNonmetalsHalogensNoble gasesLanthanidesActinides
Periodic trends
Atomic radius, ionization energy, electronegativity and metallic character.
Element categories
How metals, metalloids, nonmetals and the f-block families are classified.
Reference note: Element names and atomic numbers follow the modern periodic table. For authoritative standard atomic-weight values, consult IUPAC and the Royal Society of Chemistry.
