族周期IA 1 元素周期表0 18电子层0 族电子数1 1 H氢1.008II A2原子序数元素符号（红色表示放射性元素）元素名称（注 *的表示人造元素）相对原子质量（加括号的数据为该放射性元素半衰期最长同位素的质量数）金属元素非金属元素92 U铀238.0III A13IV A14VA15VI A16VII A172 He氦4.003 K 2 2 3 Li锂6.9414 Be铍9.0125 B硼10.816 C碳12.017 N氮14.018 O氧16.009 F氟19.0010 Ne氖20.18L K 8 2 3 11 Na钠22.9912 Mg镁24.31III B3IV B4VB5VI B6VII B7VIII8 9 10IB11II B 1213 Al 铝26.9814 Si 硅28.0915 P 磷30.9716 S 硫32.0617 Cl 氯35.4518 Ar 氩39.95M L K 8 8 2 4 19 K钾39.1020 Ca钙40.0821 Sc钪44.9622 Ti钛47.8723 V钒50.9424 Cr铬52.0025 Mn锰54.9426 Fe铁55.8527 Co钴58.9328 Ni 镍58.6929 Cu 铜63.5530Zn 锌65.4131 Ga 镓69.7232 Ge 锗72.6433 As 砷74.9234 Se 硒78.9635 Br 溴79.9036 Kr 氪83.80N M L K 8 18 8 2 5 37 Rb铷85.4738 Sr锶87.6239 Y钇88.9140Zr锆91.2241 Nb铌92.9142 Mo钼95.9443 Tc锝[98]44 Ru钌102.945 Rh铑102.946 Pd 钯106.447 Ag 银107.948 Cd 镉112.449 In 铟114.850Sn 锡118.751 Sb 锑121.852 Te 碲127.653 I 碘126.954 Xe 氙131.3O N M L K 8 18 18 8 2 6 55 Cs铯132.956 Ba钡137.357~71 La~Lu镧系72 Hf铪178.573 Ta钽180.974 W钨183.875 Re铼186.276 Os锇190.277 Ir铱192.278 Pt 铂195.179 Au 金197.080Hg 汞200.681 Tl 铊204.482 Pb 铅207.283 Po 铋209.084 Po 钋[209]85 At 砹[210]86 Rn 氡[222]P O N M L K8 18 32 18 8 27 87 Fr钫[223]88 Rr镭[226]89~103 Ac~Lr锕系104 Rf钅卢* [261]105 Db钅杜* [262]106 Sg钅喜* [266]107 Bh钅波* [264]108 Hs钅黑* [277]109 Mt钅麦* [268]110Ds 钅达* [281]111 Rg 钅仑* [272]112 Cn 钅哥* [285] 113 Uut* [284]114 Uuq* [289]115 Uup* [288]116 Uuh* [292]117 Uus* [291]118 Uuo* [293]镧系57 La镧138.958 Ce铈140.159 Pr镨140.960Nd钕144.261 Pm钷[145]62 Sm钐150.463 Eu铕152.064 Gd钆157.365 Tb铽158.966 Dy镝162.567 Ho钬164.968 Er铒167.369 Tm铥168.970Yb镱173.071 Lu镥175.0锕系89 Ac锕[227]90Th钍232.091 Pa镤231.092 U铀238.093 Np镎[237]94 Pu钚[244]95 Am镅* [243]96 Cm锔 * [247]97 Bk锫* [147]98 Cf锎* [251]99 Es锿* [252]100Fm镄* [257]101Md钔* [258]102 No锘* [259]103 Lr铹 * [262]
