序号符號名称重量
1H氢1.0082He氦4.00263Li锂6.944Be铍9.01225B硼10.816C碳12.0117N氮14.0078O氧15.9999F氟18.99810Ne氖20.18011Na钠22.99012Mg镁24.30513Al铝26.98214Si硅28.08515P磷30.97416S硫32.0617Cl氯35.4518Ar氩39.94819K钾39.09820Ca钙40.07821Sc钪44.95622Ti钛47.86723V钒50.94224Cr铬51.99625Mn锰54.93826Fe铁55.84527Co钴58.93328Ni镍58.69329Cu铜63.54630Zn锌65.3831Ga镓69.72332Ge锗72.63033As砷74.92234Se硒78.97135Br溴79.90436Kr氪83.79837Rb铷85.46838Sr锶87.6239Y钇88.90640Zr锆91.22441Nb铌92.90642Mo钼95.9543Tc锝(98)44Ru钌101.0745Rh铑102.9146Pd钯106.4247Ag银107.8748Cd镉112.4149In铟114.8250Sn锡118.7151Sb锑121.7652Te碲127.6053I碘126.9054Xe氙131.2955Cs铯132.9156Ba钡137.3357La镧138.9158Ce铈140.1259Pr镨140.9160Nd钕144.2461Pm钷(145)62Sm钐150.3663Eu铕151.9664Gd钆157.2565Tb铽158.9366Dy镝162.5067Ho钬164.9368Er铒167.2669Tm铥168.9370Yb镱173.0571Lu镥174.9772Hf铪178.4973Ta钽180.9574W钨183.8475Re铼186.2176Os锇190.2377Ir铱192.2278Pt铂195.0879Au金196.9780Hg汞200.5981Tl铊204.3882Pb铅207.283Bi铋208.9884Po钋(209)85At砹(210)86Rn氡(222)87Fr钫(223)88Ra镭(226)89Ac锕(227)90Th钍232.0491Pa镤231.0492U铀238.0393Np镎(237)94Pu钚(24