国际标准原子量

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1、AtNo  Symbol  NameAtomicWtNotes1HHydrogen1.0083,62HeHelium4.002602(2)1,23LiLithium6.943,64BeBeryllium9.0121831(5)5BBoron10.813,66CCarbon12.01167NNitrogen14.00768OOxygen15.99969FFluorine18.998403163(6)10NeNeon20.1797(6)1,311NaSodium22.98976928(2)  12MgMagnesium24.305613AlAluminium26.981

2、5385(7)14SiSilicon28.085615PPhosphorus30.973761998(5)16SSulfur32.06617ClChlorine35.453,618ArArgon39.948(1)1,219KPotassium39.0983(1)20CaCalcium40.078(4)21ScScandium44.955908(5)22TiTitanium47.867(1)23VVanadium50.9415(1)24CrChromium51.9961(6)25MnManganese54.938044(3)26FeIron55.845(2)27CoC

3、obalt58.933194(4)28NiNickel58.6934(4)229CuCopper63.546(3)230ZnZinc65.38(2)231GaGallium69.723(1)32GeGermanium72.630(8)33AsArsenic74.921595(6)34SeSelenium78.971(8)35BrBromine79.904636KrKrypton83.798(2)1,337RbRubidium85.4678(3)138SrStrontium87.62(1)1,239YYttrium88.90584(2)40ZrZirconium91.

4、224(2)141NbNiobium92.90637(2)3/342MoMolybdenum95.95(1)143TcTechnetium[97]444RuRuthenium101.07(2)145RhRhodium102.90550(2)46PdPalladium106.42(1)147AgSilver107.8682(2)148CdCadmium112.414(4)149InIndium114.818(1)50SnTin118.710(7)151SbAntimony121.760(1)152TeTellurium127.60(3)153IIodine126.90

5、447(3)54XeXenon131.293(6)1,355CsCaesium132.90545196(6)56BaBarium137.327(7)57LaLanthanum138.90547(7)158CeCerium140.116(1)159PrPraseodymium  140.90766(2)60NdNeodymium144.242(3)161PmPromethium[145]562SmSamarium150.36(2)163EuEuropium151.964(1)164GdGadolinium157.25(3)165TbTerbium158.92535(2

6、)66DyDysprosium162.500(1)167HoHolmium164.93033(2)68ErErbium167.259(3)169TmThulium168.93422(2)70YbYtterbium173.045(5)171LuLutetium174.9668(1)172HfHafnium178.49(2)73TaTantalum180.94788(2)74WTungsten183.84(1)75ReRhenium186.207(1)76OsOsmium190.23(3)177IrIridium192.217(3)78PtPlatinum195.084

7、(9)79AuGold196.966569(5)80HgMercury200.592(3)81TlThallium204.38682PbLead207.2(1)1,283BiBismuth208.98040(1)84PoPolonium[209]43/385AtAstatine[210]486RnRadon[222]487FrFrancium[223]488RaRadium[226]489AcActinium[227]490ThThorium232.0377(4)1,491PaProtactinium231.03588(2)492UUranium238.0289