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118
11HVetni2
13141516172HeHelín
23LiLitín4BeBeryllín5BBór6CKolefni7NNitur8OSúrefni9FFlúr10NeNeon
311NaNatur12MgMagnín345678910111213AlÁl14SiKísill15PFosfór16SBrennisteinn17ClKlór18ArArgon
419KKalín20CaKalsín21ScSkandín22TiTitan23VVanadín24CrKróm25MnMangan26FeJárn27CoKóbalt28NiNikull29CuKopar30ZnSink31GaGallín32GeGerman33AsArsen34SeSelen35BrBróm36KrKrypton
537RbRúbidín38SrStrontín39YYttrín40ZrSirkon41NbNióbín42MoMólýbden43TcTeknetín44RuRúten45RhRódín46PdPalladín47AgSilfur48CdKadmín49InIndín50SnTin51SbAntímon52TeTellúr53IJoð54XeXenon
655CsSesín56BaBarín57-71
La-Lu		72HfHafnín73TaTantal74WVolfram75ReRenín76OsOsmín77IrIridín78PtPlatína79AuGull80HgKvikasilfur81TlÞallín82PbBlý83BiBismút84PoPólon85AtAstat86RnRadon
787FrFransín88RaRadín89-103
Ac-Lr		104RfRutherfordín105DbDubnín106SgSeborgín107BhBohrín108HsHassín109MtMeitnerín110DsDarmstadtín111RgRöntgenín112CnUnunbín113NhNihoní114FlFlerovín115McMoscovím116LvLivermorím117TsUnunseptín118OgUnunoctín
8119UueUnunennium120UbnUnbinilium121-126
Ubu-Ubh
57LaLantan58CeSerín59PrPraseódým60NdNeodým61PmPrómetín62SmSamarín63EuEvropín64GdGadólín65TbTerbín66DyDysprósín67HoHolmín68ErErbín69TmTúlín70YbYtterbín71LuLútesín
89AcAktín90ThÞórín91PaProtaktín92UÚran93NpNeptún94PuPlúton95AmAmeríkín96CmKúrín97BkBerkelín98CfKalifornín99EsEinsteinín100FmFermín101MdMendelevín102NoNóbelín103LrLárensín
121UbuUnbiunium122UbbUnbibium123UbtUnbitrium124UbqUnbiquadium125UbpUnbipentium126UbhUnbihexium127UbsUnbiseptium

Vísbendingar

Litmus

Litarefni af náttúrulegum uppruna, eitt af fyrstu og mest vel þekkt sýru-stöð (pH) vísbendingar

Sýru
[H+] > [OH-] pH = 0
Hlutlaus
[H+] = [OH-] pH = 7
Súr
[OH-] > [H+] pH = 14