<page_title> Periodic table </page_title> <section_title> Overview </section_title> <table> <cell> Period 1 <col_header> Group </col_header> </cell> <cell> Hydro­gen1H​1.008 <col_header> 1 </col_header> <row_header> Period 1 </row_header> </cell> <cell> He­lium2He​4.0026 <col_header> 18 </col_header> <row_header> Period 1 </row_header> </cell> <cell> 2 <col_header> Group </col_header> <col_header> Period 1 </col_header> </cell> <cell> Lith­ium3Li​6.94 <col_header> 1 </col_header> <row_header> 2 </row_header> </cell> <cell> Beryl­lium4Be​9.0122 <col_header> 2 </col_header> <row_header> 2 </row_header> </cell> <cell> Boron5B​10.81 <col_header> 13 </col_header> <row_header> 2 </row_header> </cell> <cell> Carbon6C​12.011 <col_header> 14 </col_header> <row_header> 2 </row_header> </cell> <cell> Nitro­gen7N​14.007 <col_header> 15 </col_header> <row_header> 2 </row_header> </cell> <cell> Oxy­gen8O​15.999 <col_header> 16 </col_header> <row_header> 2 </row_header> </cell> <cell> Fluor­ine9F​18.998 <col_header> 17 </col_header> <row_header> 2 </row_header> </cell> <cell> Neon10Ne​20.180 <col_header> 18 </col_header> <row_header> 2 </row_header> </cell> <cell> 3 <col_header> Group </col_header> <col_header> Period 1 </col_header> <col_header> 2 </col_header> </cell> <cell> So­dium11Na​22.990 <col_header> 1 </col_header> <row_header> 3 </row_header> </cell> <cell> Magne­sium12Mg​24.305 <col_header> 2 </col_header> <row_header> 3 </row_header> </cell> <cell> Alumin­ium13Al​26.982 <col_header> 13 </col_header> <row_header> 3 </row_header> </cell> <cell> Sili­con14Si​28.085 <col_header> 14 </col_header> <row_header> 3 </row_header> </cell> <cell> Phos­phorus15P​30.974 <col_header> 15 </col_header> <row_header> 3 </row_header> </cell> <cell> Sulfur16S​32.06 <col_header> 16 </col_header> <row_header> 3 </row_header> </cell> <cell> Chlor­ine17Cl​35.45 <col_header> 17 </col_header> <row_header> 3 </row_header> </cell> <cell> Argon18Ar​39.948 <col_header> 18 </col_header> <row_header> 3 </row_header> </cell> <cell> 4 <col_header> Group </col_header> <col_header> Period 1 </col_header> <col_header> 2 </col_header> <col_header> 3 </col_header> </cell> <cell> Potas­sium19K​39.098 <col_header> 1 </col_header> <row_header> 4 </row_header> </cell> <cell> Cal­cium20Ca​40.078 <col_header> 2 </col_header> <row_header> 4 </row_header> </cell> <cell> Scan­dium21Sc​44.956 <col_header> 3 </col_header> <row_header> 4 </row_header> </cell> <cell> Tita­nium22Ti​47.867 <col_header> 4 </col_header> <row_header> 4 </row_header> </cell> <cell> Vana­dium23V​50.942 <col_header> 5 </col_header> <row_header> 4 </row_header> </cell> <cell> Chrom­ium24Cr​51.996 <col_header> 6 </col_header> <row_header> 4 </row_header> </cell> <cell> Manga­nese25Mn​54.938 <col_header> 7 </col_header> <row_header> 4 </row_header> </cell> <cell> Iron26Fe​55.845 <col_header> 8 </col_header> <row_header> 4 </row_header> </cell> <cell> Cobalt27Co​58.933 <col_header> 9 </col_header> <row_header> 4 </row_header> </cell> <cell> Nickel28Ni​58.693 <col_header> 10 </col_header> <row_header> 4 </row_header> </cell> <cell> Copper29Cu​63.546 <col_header> 11 </col_header> <row_header> 4 </row_header> </cell> <cell> Zinc30Zn​65.38 <col_header> 12 </col_header> <row_header> 4 </row_header> </cell> <cell> Gallium31Ga​69.723 <col_header> 13 </col_header> <row_header> 4 </row_header> </cell> <cell> Germa­nium32Ge​72.630 <col_header> 14 </col_header> <row_header> 4 </row_header> </cell> <cell> Arsenic33As​74.922 <col_header> 15 </col_header> <row_header> 4 </row_header> </cell> <cell> Sele­nium34Se​78.971 <col_header> 16 </col_header> <row_header> 4 </row_header> </cell> <cell> Bromine35Br​79.904 <col_header> 17 </col_header> <row_header> 4 </row_header> </cell> <cell> Kryp­ton36Kr​83.798 <col_header> 18 </col_header> <row_header> 4 </row_header> </cell> <cell> 5 <col_header> Group </col_header> <col_header> Period 1 </col_header> <col_header> 2 </col_header> <col_header> 3 </col_header> <col_header> 4 </col_header> </cell> <cell> Rubid­ium37Rb​85.468 <col_header> 1 </col_header> <row_header> 5 </row_header> </cell> <cell> Stront­ium38Sr​87.62 <col_header> 2 </col_header> <row_header> 5 </row_header> </cell> <cell> Yttrium39Y​88.906 <col_header> 3 </col_header> <row_header> 5 </row_header> </cell> <cell> Zirco­nium40Zr​91.224 <col_header> 4 </col_header> <row_header> 5 </row_header> </cell> <cell> Nio­bium41Nb​92.906 <col_header> 5 </col_header> <row_header> 5 </row_header> </cell> <cell> Molyb­denum42Mo​95.95 <col_header> 6 </col_header> <row_header> 5 </row_header> </cell> <cell> Tech­netium43Tc​[97] <col_header> 7 </col_header> <row_header> 5 </row_header> </cell> <cell> Ruthe­nium44Ru​101.07 <col_header> 8 </col_header> <row_header> 5 </row_header> </cell> <cell> Rho­dium45Rh​102.91 <col_header> 9 </col_header> <row_header> 5 </row_header> </cell> <cell> Pallad­ium46Pd​106.42 <col_header> 10 </col_header> <row_header> 5 </row_header> </cell> <cell> Silver47Ag​107.87 <col_header> 11 </col_header> <row_header> 5 </row_header> </cell> <cell> Cad­mium48Cd​112.41 <col_header> 12 </col_header> <row_header> 5 </row_header> </cell> <cell> Indium49In​114.82 <col_header> 13 </col_header> <row_header> 5 </row_header> </cell> <cell> Tin50Sn​118.71 <col_header> 14 </col_header> <row_header> 5 </row_header> </cell> <cell> Anti­mony51Sb​121.76 <col_header> 15 </col_header> <row_header> 5 </row_header> </cell> <cell> Tellur­ium52Te​127.60 <col_header> 16 </col_header> <row_header> 5 </row_header> </cell> <cell> Iodine53I​126.90 <col_header> 17 </col_header> <row_header> 5 </row_header> </cell> <cell> Xenon54Xe​131.29 <col_header> 18 </col_header> <row_header> 5 </row_header> </cell> <cell> 6 <col_header> Group </col_header> <col_header> Period 1 </col_header> <col_header> 2 </col_header> <col_header> 3 </col_header> <col_header> 4 </col_header> <col_header> 5 </col_header> </cell> <cell> Cae­sium55Cs​132.91 <col_header> 1 </col_header> <row_header> 6 </row_header> </cell> <cell> Ba­rium56Ba​137.33 <col_header> 2 </col_header> <row_header> 6 </row_header> </cell> <cell> Lan­thanum57La​138.91 <col_header> 3 </col_header> <row_header> 6 </row_header> </cell> <cell> Haf­nium72Hf​178.49 <col_header> 4 </col_header> <row_header> 6 </row_header> </cell> <cell> Tanta­lum73Ta​180.95 <col_header> 5 </col_header> <row_header> 6 </row_header> </cell> <cell> Tung­sten74W​183.84 <col_header> 6 </col_header> <row_header> 6 </row_header> </cell> <cell> Rhe­nium75Re​186.21 <col_header> 7 </col_header> <row_header> 6 </row_header> </cell> <cell> Os­mium76Os​190.23 <col_header> 8 </col_header> <row_header> 6 </row_header> </cell> <cell> Iridium77Ir​192.22 <col_header> 9 </col_header> <row_header> 6 </row_header> </cell> <cell> Plat­inum78Pt​195.08 <col_header> 10 </col_header> <row_header> 6 </row_header> </cell> <cell> Gold79Au​196.97 <col_header> 11 </col_header> <row_header> 6 </row_header> </cell> <cell> Mer­cury80Hg​200.59 <col_header> 12 </col_header> <row_header> 6 </row_header> </cell> <cell> Thallium81Tl​204.38 <col_header> 13 </col_header> <row_header> 6 </row_header> </cell> <cell> Lead82Pb​207.2 <col_header> 14 </col_header> <row_header> 6 </row_header> </cell> <cell> Bis­muth83Bi​208.98 <col_header> 15 </col_header> <row_header> 6 </row_header> </cell> <cell> Polo­nium84Po​[209] <col_header> 16 </col_header> <row_header> 6 </row_header> </cell> <cell> Asta­tine85At​[210] <col_header> 17 </col_header> <row_header> 6 </row_header> </cell> <cell> Radon86Rn​[222] <col_header> 18 </col_header> <row_header> 6 </row_header> </cell> <cell> 7 <col_header> Group </col_header> <col_header> Period 1 </col_header> <col_header> 2 </col_header> <col_header> 3 </col_header> <col_header> 4 </col_header> <col_header> 5 </col_header> <col_header> 6 </col_header> </cell> <cell> Fran­cium87Fr​[223] <col_header> 1 </col_header> <row_header> 7 </row_header> </cell> <cell> Ra­dium88Ra​[226] <col_header> 2 </col_header> <row_header> 7 </row_header> </cell> <cell> Actin­ium89Ac​[227] <col_header> 3 </col_header> <row_header> 7 </row_header> </cell> <cell> Ruther­fordium104Rf​[267] <col_header> 4 </col_header> <row_header> 7 </row_header> </cell> <cell> Dub­nium105Db​[268] <col_header> 5 </col_header> <row_header> 7 </row_header> </cell> <cell> Sea­borgium106Sg​[269] <col_header> 6 </col_header> <row_header> 7 </row_header> </cell> <cell> Bohr­ium107Bh​[270] <col_header> 7 </col_header> <row_header> 7 </row_header> </cell> <cell> Has­sium108Hs​[270] <col_header> 8 </col_header> <row_header> 7 </row_header> </cell> <cell> Meit­nerium109Mt​[278] <col_header> 9 </col_header> <row_header> 7 </row_header> </cell> <cell> Darm­stadtium110Ds​[281] <col_header> 10 </col_header> <row_header> 7 </row_header> </cell> <cell> Roent­genium111Rg​[282] <col_header> 11 </col_header> <row_header> 7 </row_header> </cell> <cell> Coper­nicium112Cn​[285] <col_header> 12 </col_header> <row_header> 7 </row_header> </cell> <cell> Nihon­ium113Nh​[286] <col_header> 13 </col_header> <row_header> 7 </row_header> </cell> <cell> Flerov­ium114Fl​[289] <col_header> 14 </col_header> <row_header> 7 </row_header> </cell> <cell> Moscov­ium115Mc​[290] <col_header> 15 </col_header> <row_header> 7 </row_header> </cell> <cell> Liver­morium116Lv​[293] <col_header> 16 </col_header> <row_header> 7 </row_header> </cell> <cell> Tenness­ine117Ts​[294] <col_header> 17 </col_header> <row_header> 7 </row_header> </cell> <cell> Oga­nesson118Og​[294] <col_header> 18 </col_header> <row_header> 7 </row_header> </cell> </table>
The elements from atomic numbers 1 (hydrogen) through 118 (oganesson) have been discovered or synthesized, completing seven full rows of the periodic table.