Period | Series | Group | |||||||||
I | II | III | IV | V | VI | VII | VIII | ||||
1 | 1 | 1HHydrogen1,0079 | (H) | 2HeHelium4,0026 | |||||||
2 | 2 | 3LiLithium6,941 | 4BeBeryllium9,012 | 5BBoron10,811 | 6CCarbon12,011 | 7NNitrogen14,007 | 8OOxygen15,999 | 9FFluorine18,998 | 10NeNeon20,18 | ||
3 | 3 | 11NaSodium22,99 | 12MgMagnesium24,305 | 13AlAluminium26,982 | 14SiSilicon28,086 | 15PPhosphorus30,974 | 16SSulfur32,065 | 17ClChlorine35,453 | 18ArArgon39,948 | ||
4 | 4 | 19KPotassium39,098 | 20CaCalcium40,078 | 21ScScandium44,956 | 22TiTitanium47,867 | 23VVanadium50,942 | 24CrChromium51,996 | 25MnManganese54,938 | 26FeIron55,845 | 27CoCobalt58,933 | 28NiNickel58,693 |
5 | 29CuCopper63,546 | 30ZnZinc65,409 | 31GaGallium69,723 | 32GeGermanium72,64 | 33AsArsenic74,992 | 34SeSelenium78,96 | 35BrBromine79,904 | 36KrKrypton83,798 | |||
5 | 6 | 37RbRubidium85,468 | 38SrStrontium87,62 | 39YYttrium88,906 | 40ZrZirconium91,224 | 41NbNiobium92,906 | 42MoMolybdenum95,94 | 43TcTechnetium[98,906] | 44RuRuthenium101,07 | 45RhRhodium102,906 | 46PdPalladium106,42 |
7 | 47AgSilver107,868 | 48CdCadmium112,411 | 49InIndium114,818 | 50SnTin118,71 | 51SbAntimony121,76 | 52TeTellurium127,60 | 53IIodine126,904 | 54XeXenon131,293 | |||
6 | 8 | 55CsCaesium132,905 | 56BaBarium137,327 | 57La*Lanthanum138,905 | 72HfHafnium178,49 | 73TaTantalum180,948 | 74WTungsten183,84 | 75ReRhenium186,207 | 76OsOsmium190,23 | 77IrIridium192,217 | 78PtPlatinum195,084 |
9 | 79AuGold196,967 | 80HgMercury200,59 | 81TlThallium204,383 | 82PbLead207,2 | 83BiBismuth208,98 | 84PoPolonium[208,98] | 85AtAstatine[209,98] | 86RnRadon[222,02] | |||
7 | 10 | 87FrFrancium[223,02] | 88RaRadium[226,03] | 89Ac**Actinium[227,03] | 104RfRutherfordium[261,1087] | 105DbDubnium[262,1138] | 106SgSeaborgium[263,1182] | 107BhBohrium[262,1229] | 108HsHassium[265] | 109MtMeitnerium[266] | 110DsDarmstadtium[269] |
11 | 111RgRoentgenium[272] | 112CnCopernicium[285] | 113UutUnuntrium[284] | 114FlFlerovium[289] | 115UupUnunpentium[288] | 116LvLivermorium[293] | 117UusUnunseptium[295] | 118UuoUnunoctium[294] | |||
The higher oxides | R2O | RO | R2O3 | RO2 | R2O5 | RO3 | R2O7 | RO4 | |||
Volatile compounds of hydrogen | RH4 | RH3 | H2R | HR |
58CeCerium140,12 | 59PrPraseodymium140,91 | 60NdNeodymium144,24 | 61PmPromethium[146,9] | 62SmSamarium[150,36] | 63EuEuropium151,96 | 64GdGadolinium157,25 | 65TbTerbium158,93 | 66DyDysprosium162,50 | 67HoHolmium164,93 | 68ErErbium167,26 | 69TmThulium168,93 | 70YbYtterbium173,04 | 71LuLutetium174,97 |
90ThThorium232,04 | 91PaProtactinium231,04 | 92UUranium238,03 | 93NpNeptunium[237,05] | 94PuPlutonium[244,06] | 95AmAmericium[243,06] | 96CmCurium[247,07] | 97BkBerkelium[247,07] | 98CfCalifornium[251,08] | 99EsEinsteinium[252,08] | 100FmFermium[257,1] | 101MdMendelevium[258,1] | 102NoNobelium[259,1] | 103LrLawrencium[260,11] |