所有元素原子结构示意图

四中子未知（尚未证实）1H氢1.0079（相对原子质量）化学元素周期表2He氦4.00263Li锂6.9414Be铍9.01225B硼10.8116C碳12.0117N氮14.0078O氧15.9994(3)9F氟18.998Ne氖20.1711Na钠22.989812Mg镁24.30513Al铝26.98214Si硅28.08515P磷30.97416S硫32.0617Cl氯35.45318Ar氩39.9419K钾39.09820Ca钙40.0821Sc钪44.95622Ti钛47.923V钒50.9424Cr铬51.99625Mn锰54.93826Fe铁55.8427Co钴58.933228Ni镍58.6929Cu铜63.5430Zn锌65.3831Ga镓69.7232Ge锗72.533As砷74.92234Se硒78.935Br溴79.90436Kr氪83.837Rb铷85.46738Sr锶87.6239Y钇88.90640Zr锆91.2241Nb铌92.906442Mo钼95.9443Tc锝(99)*44Ru钌161.045Rh铑102.90646Pd钯106.4247Ag银107.86848Cd镉112.4149In铟114.8250Sn锡118.651Sb锑121.752Te碲127.653I碘126.90554Xe氙131.355Cs铯132.90556Ba钡137.3357-71La-Lu镧系57La镧138.958Ce铈140.159Pr镨140.960Nd钕144.261Pm钷(147)*62Sm钐150.363Eu铕151.9664Gd钆157.2565Tb铽158.966Dy镝162.567Ho钬164.968Er铒167.269Tm铥168.970Yb镱173.0471Lu镥174.96772Hf铪178.473Ta钽180.94774W钨183.875Re铼186.20776Os锇190.277Ir铱192.278Pt铂195.0879Au金196.96780Hg汞200.581Tl铊204.382Pb铅207.283Bi铋208.9884Po钋(209)85At砹(201)86Rn氡(222)87Fr钫(223)88Ra镭226.0389-103Ac-Lr锕系89Ac锕(227)90Th钍232.091Pa镤231.092U铀238.093Np镎(237)94Pu钚(239,244)95Am镅(243)*96Cm锔(247)*97Bk锫(247)*98Cf锎(251)*99Es锿(252)*100Fm镄(257)*101Md钔(258)*102No锘(259)*103Lr铹(260)*104Rf钅卢(257)*105Db钅杜(261)*106Sg钅喜(262)*107Bh钅波(263)*108Hs钅黑(262)*109Mt钅麦(265)*110Ds钅达(266)*111Rg钅仑(272)*112Cn(284)*113Uub(285)*114Uuq(289)*116Uuh(291)*117Uus(292)*118