Chemistry

Periodic table Relative Atomic Masses in tabular form

The Table below gives the relative atomic masses and the symbols of the elements. The relative atomic masses are accurate to one decimal place.

ElementSymbolArElementSymbolArElementSymbolAr
ActiniumAcHafniumHf178.5PotassiumK39.1
AluminiumAl27.0HahniumHaPraseodymiumPr140.9
AmericiumAmHeliumHe4.0PromethiumPm
AntimonySb121.8HolmiumHo164.9ProtactiniumPa
ArgonAr39.9HydrogenH1.0RadiumRa
ArsenicAs74.9IndiumIn114.8RadonRn
AstatinAtIodineI126.9RheniumRe186.2
BariumBa137.3IridiumIr192.2RhodiumRh102.9
BerkeliumBkIronFe55.8RubidiumRb85.5
BerylliumBe9.0KryptonKr83.8RutheniumRu101.1
BismuthBi209.0KurebatoviumKuSamariumSm150.4
BoronB10.8LanthanumLa138.9ScandiumSc45.0
BromineBr79.9LawrenciumLrSeleniumSe79.0
CadmiumCd112.4LeadPb207.2SiliconSi28.1
CaesiumCs132.9LithiumLi6.9SilverAg107.9
CalciumCa40.1LutetiumLu175.0SodiumNa23.0
CaliforniumCfMagnesiumMg24.3StroniumSr87.6
CarbonC12.0ManganeseMn54.9SulphurS32.1
CeriumCe140.1MendeleviumMdTantalumTa180.9
ChlorineCl35.5MercuryHg200.6TechnetiumTc
ChromiumCr52.0MolybdenumMo95.9TellurimTe127.6
CobaltCo58.9NeodyniumNd144.2TerbiumTb158.9
CopperCu63.5NickelNi58.7ThalliumTi204.4
CuriumCmNiobiumNb92.9ThoriumTh232.0
DysprosiumDy162.5NitrogenN14.0ThuliamTm169.9
EinsteiniumEsNobeliumNoTinSn118.7
ErbiumEr167.3OsmiumOs190.2TitaniumTi47.9
EuropiumEu152.0OxygenO16.0TungstenW183.9
FermiumFmPalladiumPd106.4UraniumU238.0
FlourineF19.0PhosphorusP31.0VanadiumV50.9
FranciumFrPlatinumPt195.1XenonXe131.3
GadoliniumGd157.3PlutoniumPuytterbiumYb173.0
GalliumGa69.7PoloniumPoYttriumY88.9
GermaniumGe72.6NeptoniumNpZincZn65.4
GoldAu197.0NeonNe20.2ZirconiumZr91.2

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