1H1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56Ba72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88Ra##Rf##Db##Sg##Bh##Hs##Mt##Uun##Uuu##Uub##Uuq57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es##Fm##Md##No##LrOⅠA镧系锕系元素周期表族周期1[251][252][257][258][259][262]铹*[227]###############[237][244][243][247][247]锫*锎*锿*镄*钔*锘*##########锕钍镤铀镎钚镅*锔*157.3158。9162.5164.9167.3168.9铥镱镥138.9140.1140.9144.2[145]150.4#####铕钆铽镝钬铒镧铈镨钕钷钐[285][289]266[264][277][268][281][272]*226[226]锕系[261][262]钅波*钅黑*钅麦****[209][210][222]89~103钫*镭*Ac~Lr钅卢*钅杜*钅喜*195.1#####200.6204.4207.2209氡*132.9137.3镧系178.5180.9183.8186.2190.2192.2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[98]101.1102.9106.4107.9112.485.4787.6288.9191.2292.9195.94铟锡锑碲碘氙锝*钌铑钯银镉铷锶钇锆铌钼69.7272.6474.9278.96#####83.8054.9455.8558.9358.9663.5565.41#####40.0844.9647.8750.9452镓锗砷硒溴氪锰铁钴镍铜锌钾钙钪钛钒铬26.9828.0930.9732.0635.4539.95789101112磷硫氯氩22.9924.313456ⅦBⅧⅠBⅡB铝硅钠镁ⅢBⅣBⅤBⅥB氖6.9419.01210.8112.0114.01##########20.1816174.003锂铍硼碳氮氧氟ⅥAⅦA氦1.00821.008原子量131415118原子序数元素符号氢ⅡA氢ⅢAⅣAⅤA