族I A周期11 H氢1s1II A原子序数1.00823 Li4 Be92 U锂 铍铀2s12s25f36d17s26.9419.012238.0311 Na12 Mg钠 镁3s13s2III BIV BV BVI BVII B22.9924.313456719 K20 Ca21 Sc22 Ti23 V24 Cr25 Mn钾 钙 钪 钛 钒 铬 锰4s14s23d14s23d24s23d34s23d34s23d54s239.1040.0844.9647.8750.9452.0054.9637 Rb38 Sr39 Y40 Zr41 Nb42 Mo43 Tc铷 锶 钇 锆 铌 钼 锝5s15s24d15s24d25s24d35s24d45s24d55s285.4787.6288.9191.2292.9195.94[99]55 Cs56 Ba57~7172 Hf73 Ta74 W75 Re铯 钡La~Lu铪 钽 钨 铼6s16s25d26s25d36s25d46s25d56s2132.9137.3178.5180.9183.84186.2187 Fr88 Ra89~103104 Rf105 Db106 Sg107 Bh钫 镭Ac~Lr钅卢*钅杜*钅喜*钅波*7s17s2[6d27s2][6d37s2][6d47s2][6d57s2][223][226][261][262][266][264]57 La58 Ce59 Pr60 Nd61 Pm外圈电子层排布，括号指可元素名称，注* 的指人造元素元素符号，红色指放射性元相对原子质量，加括号的数数456系7镧系锕系123镧 铈 镨 钕 钷5d16s24f15d16s24f36s24f46s24f56s2138.91140.12140.91144.24[145]89 Ac90 Th91 Pa92 U93 Np锕 钍 镤 铀 镎6d17s26d27s25f26d17s25f36d17s25f46d17s2[227]232.04231.04238.03[237]镧系锕系非金属金属过渡元素III AIV AV A1314155 B6 C7 N硼 碳 氮2s22p12s22p22s22p310.8112.0114.0113 Al14 Si15 P铝 硅 磷I BII B3s23p13s23p23s23p38910111226.9828.0930.9726 Fe27 Co28 Ni29 Cu30 Zn31 Ga32 Ge33 As铁 钴 镍 铜 锌 镓 锗 砷3d64s23d74s23d84s23d104s13d104s24s24p14s24p24s24p355.8458.9358.6963.5565.4169.7272.6474.9244 Ru45 Rh46 Pd47 Ag48 Cd49 In50 Sn51 Sb钌 铑 钯 银 镉 铟 锡 锑4d65s24d75s24d85s24d105s14d105s25s25p15s25p25s25p3101.07102.91106.42107.90112.40114.82118.71121.7676 Os77 Ir78 Pt79 Au80 Hg81 Tl82 Pb83 Bi锇 铱 铂 金 汞 铊 铅 铋5d66s25d76s25d86s25d106s15d106s26s26p16s26p26s26p3190.23192.22195.08197.00200.60204.38207.20209.00108 Hs109 Mt110 Ds111 Rg112 Uub钅黑*钅麦*钅达*钅仑**[6d67s2][6d77s2][6d87s2][6d107s1][6d107s2][269][268][281][272][285]62 Sm63 Eu64 Gd65 Tb66 Dy67 Ho68 Er69 Tm号指可能的电子排布* 的指人造元素射性元素元 素 周 期 表号的数据为该放射性元素半衰期最长同位素的质量··· ···VIII钐 铕 钆铽镝钬铒铥4f66s24f76s24f75d16s24f96s24f106s24f116s24f126s24f136s2150.36151.96157.25158.93162.50164.93167.26168.9394 Pu95 Am96 Cm97 Bk98 Cf99 Es100 Fm101 Md钚镅锔锫锎锿镄钔5f67s25f77s25f76d17s25f97s25f107s25f117s25f127s25f137s2[244][243][247][247][251][252][257][258]00族18电子数2 He氦VI AVII A1s216174.0038 O9 F10 Ne氧氟氖2s22p42s22p52s22p6161920.1816 S17 Cl18 Ar硫氯氩3s23p43s23p53s23p632.0635.4539.9534 Se35 Br36 Kr硒溴氪4s24p44s24p54s24p678.9679.983.852 Te53 I54 Xe碲碘氙5s25p45s25p55s25p6127.60126.90131.2984 Po85 At86 Rn钋砹氡6s26p46s26p56s26p6[209][210][222]70 Yb71 Lu2LK82MLKNMLKONMLK882818828181882818321882电子层KPONMLK镱 镥4f146s25d16s2173.04174.97102 No103 Lr锘 铹5f147s26d17s2[259][262]
