电子层1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56Ba72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88Ra104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr镧系锕系锕系镧系[258][259][260]1234567[243][247][247][251][252][257]227.0232.0231.0238.0237.0[244]5f107s25f117s25f127s2(5f137s2)(5f147s2)(5f146d17s2)铹6d17s26d27s25f26d17s25f36d17s25f46d17s25f67s25f77s25f76s17s25f97s2锫锎锿镄钔锘173.0175.0锕钍镤铀镎钚镅锔157.3158.9162.5164.9167.3168.94f136s24f146s24f145d16s2138.9140.1140.9144.2[147]150.4152.04f76s24f75d16s24f96s24f106s24f116s24f126s2铒铥镱镥5d16s24f15d16s24f36s24f46s24f56s24f66s2钐铕钆铽镝钬[272]镧铈镨钕钷[223]226.0[261][262][263][262][265][266][269]7s17s2(6d27s2)(6d37s2)(6d47s2)(6d57s2)(6d67s2)[209][210][222]89-103钫镭Ac-Lr195.1197.0200.6204.4207.2209.06s26p56s26p6132.9137.3178.5180.9183.8186.2190.2192.25d106s15d106s26s26p16s26p26s26p36s26p4氡6s16s25d26s25d36s25d46s25d56s25d66s25d76s25d96s1汞铊铅铋钋砹钨铼锇铱铂金57-71铯钡La-Lu铪钽114.8118.7121.8127.6126.9131.3[99]101.1102.9106.4107.9112.485.4787.6288.9191.2292.9195.945s25p15s25p25s25p35s25p45s25p55s25p64d55s24d75s14d85s14d104d105s14d105s25s15s24d15s24d25s24d5s14d55s1铟锡锑碲碘氙锝钌铑钯银镉铷锶钇锆铌钼69.7272.6174.9278.9679.9083.8054.9455.8558.9358.6963.5565.3939.1040.0844.9647.8750.9452.004s24p14s24p24s24p34s24p44s24p54s24p63d54s23d64s23d74s23d84s23d104s13d104s2砷硒溴氪4s14s23d14s23d24s23d34s23d54s1钴镍铜锌镓锗35.4539.95钾钙钪钛钒铬锰铁22.9924.3126.9828.0930.9732.07氯氩3s13s23s23p3s23p23s23p33s23p43s23p53s23p6钠镁铝硅磷硫2s22p52s22p66.9419.01210.8112.0114.0116.0019.0020.182s12s22s22p12s22p22s22p32s22p41.0084.003锂铍硼碳氮氧氟氖元素周期表0氢氦1s11s2化学化工学院化学教育13班周期族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*****************电子数相对原子质量年国际原子位有相对原子质量加括号的为放射性元素的半衰期最长的同