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Trend: Ionization Energy

Elements sorted by Ionization Energy.

2HeHelium4.002610NeNeon20.189FFluorine18.99818ArArgon39.9487NNitrogen14.00736KrKrypton83.7988OOxygen15.9991HHydrogen1.00817ClChlorine35.4554XeXenon131.2935BrBromine79.9046CCarbon12.01186RnRadon22215PPhosphorus30.97453IIodine126.980HgMercury200.5916SSulfur32.0633AsArsenic74.92234SeSelenium78.97185AtAstatine21030ZnZinc65.384BeBeryllium9.012279AuGold196.9777IrIridium192.2252TeTellurium127.678PtPlatinum195.0848CdCadmium112.4176OsOsmium190.2351SbAntimony121.7684PoPolonium20946PdPalladium106.425BBoron10.8114SiSilicon28.08574WTungsten183.8426FeIron55.84532GeGermanium72.6373TaTantalum180.9527CoCobalt58.93375ReRhenium186.2129CuCopper63.54612MgMagnesium24.30528NiNickel58.69347AgSilver107.8745RhRhodium102.9125MnManganese54.93882PbLead207.244RuRuthenium101.0750SnTin118.7183BiBismuth208.9843TcTechnetium9842MoMolybdenum95.9522TiTitanium47.86772HfHafnium178.4924CrChromium51.99641NbNiobium92.90623VVanadium50.942102NoNobelium25940ZrZirconium91.224101MdMendelevium25821ScScandium44.956100FmFermium25799EsEinsteinium25298CfCalifornium25193NpNeptunium23770YbYtterbium173.0597BkBerkelium24739YYttrium88.90692UUranium238.0369TmThulium168.9364GdGadolinium157.2520CaCalcium40.07868ErErbium167.2681TlThallium204.3890ThThorium232.0494PuPlutonium24467HoHolmium164.93104RfRutherfordium26731GaGallium69.72396CmCurium24713AlAluminum26.98295AmAmericium24366DyDysprosium162.591PaProtactinium231.0465TbTerbium158.9349InIndium114.8238SrStrontium87.6263EuEuropium151.9662SmSamarium150.3657LaLanthanum138.9161PmPromethium14558CeCerium140.1260NdNeodymium144.2459PrPraseodymium140.9171LuLutetium174.973LiLithium6.9488RaRadium22656BaBarium137.3389AcActinium22711NaSodium22.99103LrLawrencium26219KPotassium39.09837RbRubidium85.46887FrFrancium22355CsCesium132.91