电子层1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56Ba72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88Ra104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lraòpōài[210][293][294]砹lìtiányà39.95[209][294][222]镧系锕系5670kè氦hài4.0031234氢qīng1.008nà22.99钾jiǎ锂lǐ6.941钠铯sè132.9钫39.10铷rú85.47138.9锕ā227.0fāng[223]镧lán钐铕钆铽铈镨钕钷gátè镝钬铒铥dīhuǒěrdiūshìpǔnǚpǒshānyǒu镱镥yìlǔ140.1140.9144.2[147]150.4152.0157.3158.9锔锫162.5164.9钍镤铀镎钚镅173.0175.0锘铹167.3168.9yóunábùméi镄钔锎锿nuòláo232.0231.0238.0237.0[244][243]tǔpú[247][247][251][252]júpéi[257][258]kāiāifèimén[259][260]镭Ac-Lrléilúxǐbōhēinǐfū镆[271][276]dá[281]lúngēmài[280][285][284][289]mò226.0[265][268][271][270][288]dù铍pí9.012镁měi24.31钙钪钛tiě钴镍铜锌钒铬锰铁55.85gǔ镓锗gàikàngtàifángèměng40.0844.9647.8750.9452.0054.9458.6963.5565.39jiāniètóngxīn69.7272.61锶钇锆铌钼锝钌58.93锡gédéliǎo铑sīyǐgàoní101.1lǎomù铟银镉yīn钯bǎyín锇102.9铱xī87.6288.9191.2292.9195.94[99]钡La-Lu铪钽钨铼铂114.8118.7106.4107.9112.4铅金汞铊gǒngébóbèihātǎnwūláiyī137.3178.5180.9jīn195.1197.0183.8186.2190.2192.2tīdìdiǎnxiān121.8127.6126.9131.379.9083.80锑碲碘氙氟氖fúnǎi20.18xiùlǜ氩氯氪碳氮氧硼zhě16.00硫péngtàndànyǎng10.8112.0126.9828.0930.97lín铝硅磷氡dōngshēn35.45砷硒溴32.0774.9278.96tā19.0089-103锕系57-71镧系liú14.01lǚguīqiānxī钋209.0bì元素周期表200.6铋204.4207.2**周期族ⅠAⅡAⅢBⅣBⅤBⅥBⅦBⅠBⅡBⅤⅢⅢAⅣAⅤAⅥAⅦA0族电子数KLMNOPKLMNOKLMNKLMKLK281832188281818828188288282U92铀yóu238.0相对原子质量拼音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2014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。**********************123456789101112131415161718281832188232KLMNOPQ元素符号,红色指放射性元素