电子层1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56Ba72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88Ra104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr镧系锕系05671234氢1s11.0083s122.99钾4s1锂2s16.941钠铯6s1132.9钫39.10铷5s185.47138.9锕6d17s2227.07s1[223]镧5d16s2钐铕钆铽铈镨钕钷4f75d16s24f96s2镝钬铒铥4f15d16s24f36s24f46s24f56s24f66s24f76s24f106s24f116s24f126s24f136s2镱镥4f146s24f145d16s2140.1140.9144.2[147]150.4152.0157.3158.9锔锫162.5164.9167.3168.9钍镤铀镎钚镅锎锿镄钔173.0175.0锘铹6d27s25f26d17s25f36d17s25f46d17s25f67s25f77s25f76s17s25f97s2(5f147s2)(5f146d17s2)232.0231.0238.0237.0[244][243][247][247][251][252][257][258]5f107s25f117s25f127s2(5f137s2)[259][260]镭Ac-Lr7s2(6d27s2)(6d37s2)(6d47s2)(6d57s2)(6d67s2)[265][266][269][272]226.0[261][262][263][262]铍2s29.012镁3s224.31钙钪钛3d64s2钴镍铜锌钒铬锰铁55.853d74s2镓锗4s23d14s23d24s23d34s23d54s13d54s240.0844.9647.8750.9452.0054.9458.6963.5565.394s24p13d84s23d104s13d104s269.7272.61锶钇锆铌钼锝钌58.93锡4d105s24d55s24d75s1铑5s24d15s24d25s24d5s1101.14d85s14d55s1铟银镉5s25p1钯4d104d105s1锇102.9铱5s25p287.6288.9191.2292.9195.94[99]钡La-Lu铪钽钨铼铂114.8118.7106.4107.9112.4铅金汞铊5d106s25d66s25d96s16s25d26s25d36s25d46s25d56s25d76s2137.3178.5180.95d106s1195.1197.0183.8186.2190.2192.25s25p35s25p45s25p55s25p6121.8127.6126.9131.374.9278.9679.9083.80锑碲碘氙4s24p64s24p216.00氟氖2s22p52s22p62s22p12s22p22s22p32s22p4碳氮氧硼20.18铝硅磷硫氯氩10.8112.0126.9828.0930.9732.0714.013s23p3s23p23s23p34s24p34s24p44s24p53s23p535.453s23p4砷硒溴氪[209]氦1s24.0033s23p639.9519.00氡6s26p6[222]204.4207.26s26p16s26p26s26p46s26p5[210]6s26p3元素周期表89-103锕系砹57-71镧系200.6铋钋209.0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*的是人造元素非金属金属过渡元素注:1.相对原子质量录自1995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。杜钅钅卢钅喜钅波钅钅钅钅黑麦达仑*****************