电子层1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56Ba72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88Ra104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr(6d107s27p6)[294]𫟷(6d107s27p4)[293](6d107s27p5)[294]89-103锕系砹57-71镧系200.6铋钋209.0204.4207.26s26p16s26p26s26p46s26p5[210]6s26p3[209.2][281][285][286][289][288]元素周期表4s24p3砷3s23p13s23p23s23p326.9828.0930.97铝硅磷2s22p12s22p22s22p33d84s23d104s13d104s2钴锌氦1s24.0033s23p639.9519.00氡6s26p632.074s24p44s24p53s23p535.453s23p4硒溴硫氯氩2s22p478.9679.9083.80[222]硼20.1810.8112.0114.01碳氮氧4s24p64s24p216.00氟氖2s22p52s22p6锗4s24p1氪锑碲碘氙74.92121.8127.6126.9131.35s25p35s25p45s25p55s25p66s25d26s25d36s2铂114.8118.7106.4107.9112.4铅金汞铊钨铼锇137.3178.5180.9197.05d46s25d56s25d106s25d66s25d96s15d106s1183.8186.2190.25d76s2192.2195.1102.9铱钡La-Lu铪钽5s25p287.6288.9191.2292.9195.94[97.99]101.14d85s14d55s15s24d15s24d25s24d5s14d104d105s14d105s2铟银镉5s25p14d55s24d75s1铑72.63锶钇锆铌钼锝钌58.93锡58.6963.5565.39钯69.7252.0054.9455.853d74s240.0844.9647.8750.944s23d14s23d24s23d34s23d54s13d54s23d64s2钒铬锰铁镓24.31钙钪钛镍铜铍2s29.012镁3s2(6d107s27p3)[226][267][268][269][270][269][278](6d87s2)[281](6d97s2)(6d107s2)(6d107s27p1)𫓧(6d107s27p2)镆7s2(6d27s2)(6d37s2)(6d47s2)(6d57s2)(6d67s2)(6d77s2)镭Ac-Lr[260](5f147s2)(5f146d17s2)232.0231.0238.0237.0[244][243][247][247]5f76s17s25f97s25f107s25f117s25f127s2(5f137s2)6d27s25f26d17s2锿镄钔锘[251][252][257][258][259]铹173.0175.0钍镤铀镎钚镅锔锫157.3158.9162.5164.9167.3168.9140.1140.9144.2[147]150.4152.0锎4f106s24f116s24f126s24f136s24f146s24f145d16s2镱镥4f15d16s24f36s24f46s24f56s24f66s24f76s24f75d16s24f96s2钆铽镝钬铒铥铈镨钕钷钐铕镧5d16s2138.9锕6d17s25f36d17s25f46d17s25f67s25f77s21234氢1s11.008227.0铯6s1132.9钫7s1[223]钾4s139.10铷5s185.47镧系锕系05锂2s16.941钠3s122.9967周期族ⅠAⅡAⅢBⅣBⅤBⅥBⅦBⅠBⅡBⅤⅢⅢAⅣAⅤAⅥAⅦA0族电子数KLMNOPKLMNOKLMNKLMKLK281832188281818828188288282U92铀5f36d17s2238.0相对原子质量元素符号,红色指放射性元素外围电子层排布,括号指可能的电子层排布原子序数元素名称注*的是人造元素注:1.相对原子质量录自1999年国际原子量表,并全部取4位有效数字。2.相对原子质量加括号的为放射性元素的半衰期最长的同位素的质量数。3.新元素名称来自2017年1月15日由全国科学技术名词审定委员会联合国家语言文字工作委员会形成的《113号、115号、117号、118号元素中文定名方案》𬭊𬬻𬭳𬭛𬭶鿏𫟼𬬭*****************-42424-31234511111122222132342343422323535452362362345612346724567-11234231234534682323122121312223456323423433312313242424-335-335-33535-2-1-246-246-246-2246-1-11357-11357-113571357鿔*KLMNOP281832188Q32******非金属金属过渡元素图例: