Table of Atomic Weights

Element

Symbolatomic no.
Z
atomic weight
(chem scale)
ActiniumAc89(227)
AluminumAl13226.98
AmericiumAm95(243)
AntimonySb51121.76
ArgonAr1839.944
ArsenicAs3374.91
AstatineAt84(210)
BariumBa56137.36
BerkeliumBk97(247)
BerylliumBe4449.013
BismuthBi83(209)
BoronB510.82
BromineBr3579.916
CadmiumCd48112.41
CalciumCa2040.08
CaliforniumCf98(251)
CarbonC612.011
CeriumCe58140.13
CesiumCs55132.91
ChlorineCl1735.457
ChromiumCr2452.01
CobaltCo2758.94
CopperCu2963.54
CuriumCm96(247)
DysprosiumDy66162.51
FermiumFm100(253)
FluorineF919.00
FranciumFr87(223)
GadoliniumGd64157.26
GalliumGa3169.72
GermaniumGe3272.60
GoldAu79197.0
HafniumHf72178.50
HeliumHe24.003
HolmiumHo67164.94
HydrogenH11.0080
IndiumIn49114.82
IodineI53126.91
IridiumIr77192.2
IronFe2655.85
KryptonKr3683.80
LanthanumLa57138.92
LeadPb82207.21
LithiumLi36.940
LutetiumLu71174.99
MagnesiumMg1224.32
ManganeseMn2554.94
MendeleviumMd101(256)
MercuryHg80200.61
MolybdenumMo4295.95
NeodymiumNd60144.27
NeonNe1020.183
NeptuniumNp93(237)
NickelNi2858.71
Niobiom or
(Columbium)(Cb)
NB44192.91
NitrogenN714.008
NobeliumNo102(253)
OsmiumOs76190.2
OxygenO816.0000
(standard)
PalladiumPd46106.4
PhosphorusP1530.975
PlatinumPt78195.09
PlutoniumPu94(244)
PoloniumPo84(210)
PotassiumK1939.100
PraseodymiumPr59140.92
PromethiumPm61(145)
ProtactiniumPa91(213)
RadiumRa88(226)
RheniumRe75186.22
RhodiumRh45102.91
RubidiumRb3785.48
RutheniumRu44101.10
SamariumSm62150.35
ScandiumSc2144.96
SeleniumSe3478.96
SiliconSi1428.09
SilverAg47107.88
SodiumNa1122.991
StrontiumSr38 87.63
SulfurS1632.066
TantalumTa73180.95
TechnetiuumTc43(98)
TelluriumTe52127.61
TerbiumTb65158.93
ThalliumTl81204.39
ThoriumTh90(232)
ThuliumTm69168.94
TinSn50118.70
TitaniumTi2247.90
Tungsten
(Wolfram)
W74183.86
UraniumU92(238)
VanadiumV2350.95
XenonXe54131.30
YtterfiumYb70173.04
YttriumY3988.92
ZincZn3065.38
ZirconiumZr4091.22