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List of elements by symbol

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This is a list of chemical elements by symbol, including the current symbols used to identify the chemical elements as recognized by the International Union of Pure and Applied Chemistry, as well as proposed and historical symbols. Also given is each element's atomic number, atomic mass or most stable isotope, group and period numbers on the periodic table, and origin of the symbol if not obvious from the current name of the element.

Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases

Current symbolsEdit

Symbol Name Origin of Symbol Atomic Number Atomic Mass Group Period
AcActiniumGreek aktinos89[227][1] 7
AgSilverLatin argentum47107.8682(2)[2]115
AlAluminium (Aluminum)alumen1326.9815386(8)133
AmAmericiumthe Americas95[243][1] 7
ArArgonGreek argon1839.948(1)[2] [3]183
AsArsenicGreek arsenikos3374.92160(2)154
AtAstatineGreek astatos85[210][1]176
AuGoldLatin aurum79196.966569(4)116
BBoronborax and carbon510.811(7)[2] [4] [3]132
BaBariumGreek barys56137.327(7)26
BeBerylliumberyl49.012182(3)22
BhBohriumNiels Bohr107[264][1]77
BiBismuthcorruption of the German wissmuth83208.98040(1)156
BkBerkeliumBerkeley, California97[247][1] 7
BrBromineGreek bromos3579.904(1)174
CCarboncarbo612.0107(8)[2] [3]142
CaCalciumcalx2040.078(4)[2]24
CdCadmiumGreek kadmia48112.411(8)[2]125
CeCeriumCeres58140.116(1)[2] 6
CfCaliforniumState and University of California98[251][1] 7
ClChlorineGreek chloros1735.453(2)[2] [4] [3]173
CmCuriumPierre and Marie Curie96[247][1] 7
CoCobaltkobold2758.933195(5)94
CrChromiumGreek chroma2451.9961(6)64
CsCaesium (Cesium)Latin caesius55132.9054519(2)16
CuCopperLatin Cuprum2963.546(3)[3]114
DbDubniumDubna, Russia105[262][1]57
DsDarmstadtiumDarmstadt, Germany110[271][1]107
DyDysprosiumGreek dysprositos66162.500(1)[2] 6
ErErbiumYtterby, Sweden68167.259(3)[2] 6
EsEinsteiniumAlbert Einstein99[252][1] 7
EuEuropiumEurope63151.964(1)[2] 6
FFluorineLatin fluo918.9984032(5)172
FeIronLatin ferrum2655.845(2)84
FmFermiumEnrico Fermi100[257][1] 7
FrFranciumFrance87[223][1]17
GaGalliumLatin Gallia3169.723(1)134
GdGadoliniumgadolinite64157.25(3)[2] 6
GeGermaniumGermany3272.64(1)144
HHydrogenGreek hydror and gen11.00794(7)[2] [4] [3]11
HeHeliumGreek helios24.002602(2)[2] [3]181
HfHafniumLatin Hafnia72178.49(2)46
HgMercuryLatin hydr'argyrum80200.59(2)126
HoHolmiumLatin Holmia67164.930 32(2) 6
HsHassiumHesse, Germany108[277][1]87
IIodineGreek ioeides53126.904 47(3)175
InIndiumindigo blue49114.818(3)135
IrIridiumGreek iris77192.217(3)96
KPotassium (Kalium)Latin kalium1939.0983(1)14
KrKryptonGreek kryptos3683.798(2)[2] [4]184
LaLanthanumlanthanien57138.90547(7)[2] 6
LiLithiumGreek lithos36.941(2)[2] [4] [3] [5]12
LrLawrenciumErnest O. Lawrence103[262][1]37
LuLutetiumLatin Lutetia71174.967(1)[2]36
MdMendeleviumDmitri Mendeleyev101[258][1] 7
MgMagnesiumMagnesia, Greece1224.3050(6)23
MnManganeseLatin magnes2554.938045(5)74
MoMolybdenumGreek molybdos4295.94(2)[2]65
MtMeitneriumLise Meitner109[268][1]97
NNitrogenGreek nitron and gen714.0067(2)[2] [3]152
NaSodiumLatin natrium1122.98976928(2)13
NbNiobiumNiobe4192.906 38(2)55
NdNeodymiumGreek neos didymos60144.242(3)[2] 6
NeNeonGreek neos1020.1797(6)[2] [4]182
NiNickelGerman kupfernickel2858.6934(2)104
NoNobeliumAlfred Nobel102[259][1] 7
NpNeptuniumNeptune93[237][1] 7
OOxygenGreek oxys and gen815.9994(3)[2] [3]162
OsOsmiumosme76190.23(3)[2]86
PPhosphorusGreek phos'phoros1530.973762(2)153
PaProtactiniumGreek protos and actinium91231.03588(2)[1] 7
PbLeadLatin plumbum82207.2(1)[2] [3]146
PdPalladiumPallas46106.42(1)[2]105
PmPromethiumPrometheus61[145][1] 6
PoPoloniumPoland84[210][1]166
PrPraseodymiumGreek prasios didymos59140.90765(2) 6
PtPlatinumGreek plat'ina78195.084(9)106
PuPlutoniumPluto94[244][1] 7
RaRadiumGreek radius88[226][1]27
RbRubidiumLatin rubidus3785.4678(3)[2]15
ReRheniumRhine Province75186.207(1)76
RfRutherfordiumErnest Rutherford104261[1]47
RgRoentgeniumWilhelm Conrad Röntgen111[272][1]117
RhRhodiumGreek rhodon45102.905 50(2)95
RnRadonradium86[220][1]186
RuRutheniumLatin Ruthenia44101.07(2)[2]85
SSulfur (Sulphur)sulfur1632.065(5)[2] [3]163
SbAntimonyLatin stibium51121.760(1)[2]155
ScScandiumScandinavia2144.955912(6)34
SeSeleniumGreek selene3478.96(3)[3]164
SgSeaborgiumGlenn T. Seaborg106[266][1]67
SiSiliconLatin silex1428.0855(3)[3]143
SmSamariumsamarskite62150.36(2)[2] 6
SnTinLatin stannum50118.710(7)[2]145
SrStrontiumLatin Strontian3887.62(1)[2] [3]25
TaTantalumKing Tantalus73180.94788(2)56
TbTerbiumYtterby, Sweden65158.92535(2) 6
TcTechnetiumGreek technetos43[98][1]75
TeTelluriumGreek tellus52127.60(3)[2]165
ThThoriumThor90232.03806(2)[1] [2] 7
TiTitaniumthe Titans2247.867(1)44
TlThalliumGreek thallos81204.3833(2)136
TmThuliumThule69168.93421(2) 6
UUraniumUranus92238.02891(3)[1] [2] [4] 7
UubUnunbiumLatin uni and bi112[285][1]127
UuhUnunhexiumLatin uni and Greek hex116[292][1]167
UuoUnunoctiumLatin uni and oct118[294][1]187
UupUnunpentiumLatin uni and Greek pent115[288][1]157
UuqUnunquadiumLatin uni and quadr114[289][1]147
UutUnuntriumLatin uni and Greek tri113[284][1]137
VVanadiumVanadis2350.9415(1)54
WTungstenGerman wolfram74183.84(1)66
XeXenonGreek xenos54131.293(6)[2] [4]185
YYttriumYtterby, Sweden3988.90585(2)35
YbYtterbiumYtterby, Sweden70173.04(3)[2] 6
ZnZincGerman zin3065.409(4)124
ZrZirconiumzircon4091.224(2)[2]45
Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases

Symbols not currently usedEdit

Chemical SymbolNameAtomic NumberSourceWhy Not Used
AArgon18Current symbol is Ar. [6]
AbAlabamine85Discredited claim to discovery of astatine. [6]
AmAlabamium85Discredited claim to discovery of astatine. [6]
AnActinon86Name given at one time to an isotope of radon identified in the decay chain of actinium. [6]
AnAthenium99Proposed name for einsteinium. [6]
AoAusonium93Discredited claim to discovery of neptunium. [6]
AzAzote7Former name for nitrogen. [6]
BvBrevium91Former name for protactinium. [6]
BzBerzelium59Suggested name for praseodymium. [6]
CbColumbium41Former name of niobium. [6]
CbColumbium95Suggested name for americium. [6]
CpCassiopeium71Former name for lutetium. [6]
CtCenturium100Proposed name for fermium. [6]
CtCeltium72Former name of hafnium. [6]
DaDanubium43Suggested name for technetium. [6]
DbDubnium104Proposed name for rutherfordium. The symbol and name were used for element 105. [6]
DiDidymium-Rare earth metal that proved to be a mixture of the elements praseodymium and neodymium. [6]
DpDecipium-Rare earth metal that proved to be a mixture of the elements samarium, neodymium and praseodymium. [6]
EbEkaboron21Name given by Mendeleev to an as of then undiscovered element. When discovered, scandium closely matched the prediction. [6]
ElEkaaluminium31Name given by Mendeleev to an as of then undiscovered element. When discovered, gallium closely matched the prediction. [6]
EmEkamangan43Name given by Mendeleev to an as of then undiscovered element. When discovered, technetium closely matched the prediction. [6]
EsEkasilicon32Name given by Mendeleev to an as of then undiscovered element. When discovered, germanium closely matched the prediction. [6]
EsEsperium94Discredited claim to discovery of plutonium. [6]
FaFrancium87Current symbol is Fr. [6]
FrFlorentium61Discredited claim to discovery of promethium. [6]
GlGlucinium4Former name of beryllium. [6]
HaHahnium105Proposed name for dubnium. [6]
HaHahnium108Proposed name for hassium. [6]
IlIllinium61Discredited claim to discovery of promethium. [6]
IoIonium90Name given at one time to an isotope of thorium identified in the decay chain of uranium. [6]
JIodine53In some languages, the name for iodine begins with J instead of I. [6]
JgJargonium72Discredited claim to discovery of hafnium. [6]
JoJoliotium105Proposed name for dubnium. [6]
KuKurchatovium104Proposed name for rutherfordium. [6]
LwLawrencium103Current symbol is Lr. [6]
MMuriaticum17Former name of chlorine. [6]
MaMasurium43Disputed claim to discovery of technetium. [6]
MdMendelevium97Proposed name for berkelium. The symbol and name were later used for element 101. [6]
MeMendelevium68Suggested name for erbium. [6]
MsMasrium49Discredited claim of discovery of indium. [6]
MtMeitnium91Suggested name for protactinium. [6]
MvMendelevium101Current symbol is Md. [6]
NgNorwegium72Discredited claim to discovery of hafnium. [6]
NiNiton86Former name for radon. [6]
NoNorium72Discredited claim to discovery of hafnium. [6]
NsNielsbohrium105Proposed name for dubnium. [6]
NsNielsbohrium107Proposed name for bohrium. [6]
NtNiton86Suggested name for radon. [6]
NwNewtonium67Suggested name for holmium. [6]
NyNeoytterbium70Former name of ytterbium. [6]
OdOdinium62Suggested name for samarium. [6]
PcPolicium110Proposed name for darmstadtium. [6]
PePelopium41Former name for niobium. [6]
PoPotassium19Current symbol is K. [6]
PpPhilippium-Rare earth metal that proved to be a mixture of the elements holmium and samarium. [6]
RfRutherfordium106Proposed name for seaborgium. The symbol and name were instead used for element 104. [6]
SaSamarium62Current symbol is Sm. [6]
SoSodium11Current symbol is Na. [6]
SpSpectrium70Suggested name for ytterbium. [6]
StAntimony51Current symbol is Sb. [6]
TnThoron86Name given at one time to an isotope of radon identified in the decay chain of thorium. [6]
TnTungsten74Current symbol is W. [6]
TuThulium69Current symbol is Tm. [6]
TuTungsten74Current symbol is W. [6]
TyTyrium60Suggested name for neodymium. [6]
UnbUnnilbium102Temporary name given to nobelium until that permanent name was chosen. [6]
UneUnnilennium109Temporary name given to meitnerium until that permanent name was chosen. [6]
UnhUnnilhexium106Temporary name given to seaborgium until that permanent name was chosen. [6]
UnoUnniloctium108Temporary name given to hassium until that permanent name was chosen. [6]
UnpUnnilpentium105Temporary name given to dubnium until that permanent name was chosen. [6]
UnqUnnilquadium104Temporary name given to rutherfordium until that permanent name was chosen. [6]
UnsUnnilseptium107Temporary name given to bohrium until that permanent name was chosen. [6]
UntUnniltrium103Temporary name given to lawrencium until that permanent name was chosen. [6]
UnuUnnilunium101Temporary name given to mendelevium until that permanent name was chosen. [6]
UunUnunnilium110Temporary name given to darmstadtium until that permanent name was chosen. [6]
UuuUnununium111Temporary name given to roentgenium until that permanent name was chosen. [6]
ViVirginium87Discredited claim to discovery of francium. [6]
VmVirginium87Discredited claim to discovery of francium. [6]
YtYttrium39Current symbol is Y. [6]

The meaning of symbols in Why Not Used

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 The element does not have any stable nuclides, and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element. However, three elements, Thorium, Protactinium, and Uranium, have a characteristic terrestrial isotopic composition, and thus their atomic mass given.
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30 2.31 2.32 2.33 2.34 2.35 2.36 2.37 2.38 The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
  3. 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
  5. The atomic weight of commercial Lithium can vary between 6.939 and 6.996—analysis of the specific material is necessary to find a more accurate value.
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 6.17 6.18 6.19 6.20 6.21 6.22 6.23 6.24 6.25 6.26 6.27 6.28 6.29 6.30 6.31 6.32 6.33 6.34 6.35 6.36 6.37 6.38 6.39 6.40 6.41 6.42 6.43 6.44 6.45 6.46 6.47 6.48 6.49 6.50 6.51 6.52 6.53 6.54 6.55 6.56 6.57 6.58 6.59 6.60 6.61 6.62 6.63 6.64 6.65 6.66 6.67 6.68 6.69 6.70 6.71 6.72 6.73 6.74 6.75 6.76 6.77 6.78 The name/symbol was an isotope's one.

Other symbols that look like element symbolsEdit

NotesEdit

ReferencesEdit

External linksEdit

Periodic tables

Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks | Alternatives

Lists of elements

Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass

Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block
Smallwikipedialogo.png This page uses content from Wikipedia. The original article was at List of elements by symbol. The list of authors can be seen in the page history. As with Chemistry, the text of Wikipedia is available under the GNU Free Documentation License.


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