বর্তমান প্রতীকসমূহ  SymbolNameOrigin of SymbolAtomic NumberAtomic MassGroupPeriodAcActiniumGreek aktinos89[227]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. 7AgSilverLatin argentum47107.8682(2)The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.115AlAluminium (Aluminum)Latin alumen1326.9815386(8)133AmAmericiumthe Americas95[243] 7ArArgonGreek argon1839.948(1)The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.183|}AsArsenicGreek arsenikos3374.92160(2)154AtAstatineGreek astatos85[210]176AuGoldLatin aurum79196.966569(4)116BBoronborax and carbon510.811(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.132BaBariumGreek barys56137.327(7)26BeBerylliumberyl49.012182(3)22BhBohriumNiels Bohr107[264]77BiBismuthcorruption of the German wissmuth83208.98040(1)156BkBerkeliumBerkeley, California97[247] 7BrBromineGreek bromos3579.904(1)174CCarbonLatin carbo612.0107(8)142CaCalciumLatin calx2040.078(4)24CdCadmiumGreek kadmia48112.411(8)125CeCeriumCeres58140.116(1) 6CfCaliforniumState and University of California98[251] 7ClChlorineGreek chloros1735.453(2)173CmCuriumPierre and মারি ক্যুরি96[247] 7CoCobaltGerman kobold2758.933195(5)94CrChromiumGreek chroma2451.9961(6)64CsCaesium (Cesium)Latin caesius55132.9054519(2)16CuCopperLatin Cuprum2963.546(3)114DbDubniumDubna, Russia105[262]57DsDarmstadtiumDarmstadt, Germany110[271]107DyDysprosiumGreek dysprositos66162.500(1) 6ErErbiumYtterby, Sweden68167.259(3) 6EsEinsteiniumAlbert Einstein99[252] 7EuEuropiumEurope63151.964(1) 6FFluorineLatin fluo918.9984032(5)172FeIronLatin ferrum2655.845(2)84FmFermiumEnrico Fermi100[257] 7FrFranciumFrance87[223]17GaGalliumLatin Gallia3169.723(1)134GdGadoliniumgadolinite64157.25(3) 6GeGermaniumGermany3272.64(1)144HHydrogenGreek hydror and gen11.00794(7)11HeHeliumGreek helios24.002602(2)181HfHafniumLatin Hafnia72178.49(2)46HgMercuryLatin hydrargyrum80200.59(2)126HoHolmiumLatin Holmia67164.930 32(2) 6HsHassiumHesse, Germany108[277]87IIodineGreek ioeides53126.904 47(3)175InIndiumindigo blue49114.818(3)135IrIridiumGreek iris77192.217(3)96KPotassium (Kalium)Latin kalium1939.0983(1)14KrKryptonGreek kryptos3683.798(2)184LaLanthanumGreek lanthanien57138.90547(7) 6LiLithiumGreek lithos36.941(2)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.12LrLawrenciumErnest O. Lawrence103[262]37LuLutetiumLatin Lutetia71174.967(1)36MdMendeleviumDmitri Mendeleyev101[258] 7MgMagnesiumMagnesia, Greece1224.3050(6)23MnManganeseLatin magnes2554.938045(5)74MoMolybdenumGreek molybdos4295.94(2)65MtMeitneriumLise Meitner109[268]97NNitrogenGreek nitron and gen714.0067(2)152NaSodiumLatin natrium1122.98976928(2)13NbNiobiumNiobe4192.906 38(2)55NdNeodymiumGreek neos didymos60144.242(3) 6NeNeonGreek neos1020.1797(6)182NiNickelGerman kupfernickel2858.6934(2)104NoNobeliumAlfred Nobel102[259] 7NpNeptuniumNeptune93[237] 7OOxygenGreek oxys and gen815.9994(3)162OsOsmiumGreek osme76190.23(3)86PPhosphorusGreek phosphoros1530.973762(2)153PaProtactiniumGreek protos and actinium91231.03588(2) 7PbLeadLatin plumbum82207.2(1)146PdPalladiumPallas46106.42(1)105PmPromethiumPrometheus61[145] 6PoPoloniumPoland84[210]166PrPraseodymiumGreek prasios didymos59140.90765(2) 6PtPlatinumGreek platina78195.084(9)106PuPlutoniumPluto94[244] 7RaRadiumGreek radius88[226]27RbRubidiumLatin rubidus3785.4678(3)15ReRheniumRhine Province75186.207(1)76RfRutherfordiumErnest Rutherford10426147RgRoentgeniumভিলহেল্ম কনরাড র‌ন্টগেন111[272]117RhRhodiumGreek rhodon45102.905 50(2)95RnRadonradium and emanation86[220]186RuRutheniumLatin Ruthenia44101.07(2)85SSulfur (Sulphur)Latin sulfur1632.065(5)163SbAntimonyLatin stibium51121.760(1)155ScScandiumScandinavia2144.955912(6)34SeSeleniumGreek selene3478.96(3)164SgSeaborgiumGlenn T. Seaborg106[266]67SiSiliconLatin silex1428.0855(3)143SmSamariumsamarskite62150.36(2) 6SnTinLatin stannum50118.710(7)145SrStrontiumLatin Strontian3887.62(1)25TaTantalumKing Tantalus73180.94788(2)56TbTerbiumYtterby, Sweden65158.92535(2) 6TcTechnetiumGreek technetos43[98]75TeTelluriumGreek tellus52127.60(3)165ThThoriumThor90232.03806(2) 7TiTitaniumthe Titans2247.867(1)44TlThalliumGreek thallos81204.3833(2)136TmThuliumThule69168.93421(2) 6UUraniumUranus92238.02891(3) 7UubUnunbiumLatin uni and bi112[285]127UuhUnunhexiumLatin uni and Greek hex116[292]167UuoUnunoctiumLatin uni and oct118[294]187UupUnunpentiumLatin uni and Greek pent115[288]157UuqUnunquadiumLatin uni and quadr114[289]147UutUnuntriumLatin uni and Greek tri113[284]137VVanadiumVanadis2350.9415(1)54WTungstenGerman wolfram74183.84(1)66XeXenonGreek xenos54131.293(6)185YYttriumYtterby, Sweden3988.90585(2)35YbYtterbiumYtterby, Sweden70173.04(3) 6ZnZincGerman zin3065.409(4)124ZrZirconiumzircon4091.224(2)45   বর্তমানে অব্যবহৃত প্রতীকসমূহ  Chemical SymbolNameAtomic NumberOrigin of SymbolWhy Not UsedAArgon18Current symbol is Ar. Name changed due to a standardization of, modernization of, or update to older previously used symbol. AbAlabamine85Discredited claim to discovery of astatine. Name designated by discredited/disputed claimant. AmAlabamium85Discredited claim to discovery of astatine. AnAthenium99Proposed name for einsteinium. Name proposed prior to discovery/creation of element or prior to official re-naming of a placeholder name. AoAusonium93Discredited claim to discovery of neptunium. AzAzote7Former name for nitrogen. BvBrevium91Former name for protactinium. BzBerzelium59Suggested name for praseodymium. CbColumbium41Former name of niobium. CbColumbium95Suggested name for americium. CpCassiopeium71Former name for lutetium. CtCenturium100Proposed name for fermium. CtCeltium72Former name of hafnium. DaDanubium43Suggested name for technetium. DbDubnium104Proposed name for rutherfordium.  The symbol and name were used for element 105. DiDidymium-Rare earth metal that proved to be a mixture of the elements praseodymium and neodymium. Elemental substance found to be multi-atomic. DpDecipium-Rare earth metal that proved to be a mixture of the elements samarium, neodymium and praseodymium. EbEkaboron21Name given by Mendeleev to an as of then undiscovered element. When discovered, scandium closely matched the prediction. Temporary placeholder name. ElEkaaluminium31Name given by Mendeleev to an as of then undiscovered element. When discovered, gallium closely matched the prediction. EmEmanation86Also called radium emanation, the name was originally given by Friedrich Ernst Dorn in 1900.  In 1923, this element officially became radon (the name given at one time to 222Rn, an isotope identified in the decay chain of radium). EmEkamangan43Name given by Mendeleev to an as of then undiscovered element. When discovered, technetium closely matched the prediction. EsEkasilicon32Name given by Mendeleev to an as of then undiscovered element. When discovered, germanium closely matched the prediction. EsEsperium94Discredited claim to discovery of plutonium. FaFrancium87Current symbol is Fr. FrFlorentium61Discredited claim to discovery of promethium. GlGlucinium4Former name of beryllium. HaHahnium105Proposed name for dubnium. HaHahnium108Proposed name for hassium. IlIllinium61Discredited claim to discovery of promethium. JIodine53In some languages, the name for iodine begins with J instead of I. Name currently used in a different language. JgJargonium72Discredited claim to discovery of hafnium. JoJoliotium105Proposed name for dubnium. KuKurchatovium104Proposed name for rutherfordium. LwLawrencium103Current symbol is Lr. MMuriaticum17Former name of chlorine. MaMasurium43Disputed claim to discovery of technetium. MdMendelevium97Proposed name for berkelium.  The symbol and name were later used for element 101. MeMendelevium68Suggested name for erbium. MsMasrium49Discredited claim of discovery of indium. MtMeitnium91Suggested name for protactinium. MvMendelevium101Current symbol is Md. NgNorwegium72Discredited claim to discovery of hafnium. NiNiton86Former name for radon. NoNorium72Discredited claim to discovery of hafnium. NsNielsbohrium105Proposed name for dubnium. NsNielsbohrium107Proposed name for bohrium. NtNiton86Suggested name for radon. NwNewtonium67Suggested name for holmium. NyNeoytterbium70Former name of ytterbium. OdOdinium62Suggested name for samarium. PcPolicium110Proposed name for darmstadtium. PePelopium41Former name for niobium. PoPotassium19Current symbol is K. PpPhilippium-Rare earth metal that proved to be a mixture of the elements holmium and samarium. RfRutherfordium106Proposed name for seaborgium.  The symbol and name were instead used for element 104. SaSamarium62Current symbol is Sm. SoSodium11Current symbol is Na. SpSpectrium70Suggested name for ytterbium. StAntimony51Current symbol is Sb. TnTungsten74Current symbol is W. TuThulium69Current symbol is Tm. TuTungsten74Current symbol is W. TyTyrium60Suggested name for neodymium. UnbUnnilbium102Temporary name given to nobelium until it was permanently named by IUPAC. UneUnnilennium109Temporary name given to meitnerium until it was permanently named by IUPAC. UnhUnnilhexium106Temporary name given to seaborgium until it was permanently named by IUPAC. UnoUnniloctium108Temporary name given to hassium until it was permanently named by IUPAC. UnpUnnilpentium105Temporary name given to dubnium until it was permanently named by IUPAC. UnqUnnilquadium104Temporary name given to rutherfordium until it was permanently named by IUPAC. UnsUnnilseptium107Temporary name given to bohrium until it was permanently named by IUPAC. UntUnniltrium103Temporary name given to lawrencium until it was permanently named by IUPAC. UnuUnnilunium101Temporary name given to mendelevium until it was permanently named by IUPAC. UunUnunnilium110Temporary name given to darmstadtium until it was permanently named by IUPAC. UuuUnununium111Temporary name given to roentgenium until it was permanently named by IUPAC. ViVirginium87Discredited claim to discovery of francium. VmVirginium87Discredited claim to discovery of francium. YtYttrium39Current symbol is Y.    চিত্রমূলক প্রতীকসমূহ   Chemical SymbolNameAtomic NumberOrigin of SymbolWhy Not Used20pxHydrogen1Daltonian symbol circa 1808. 20pxSulfur16Alchemical symbol. 20pxPallas16Alchemical symbol. 20pxSulfur16Daltonian symbol circa 1808. ⊛Magnesium21Alchemical symbol. ♂Mars26Alchemical symbol. ✶Stellae Fixae29Pre-1500s alchemical symbol. ♀Venus29Alchemical symbol. ©Copper29Daltonian symbol circa 1808. 20pxArsenic33Alchemical symbol. ☽Luna48Alchemical symbol. 20pxIupiter50Alchemical symbol. ♁Antimony51Alchemical symbol. ☉☾Platinum78Alchemical symbol. 20pxUranus78Alchemical symbol. ☼Sol79Alchemical symbol from the 1500s☉Sol79Alchemical symbol from 1700 through 1783. Pisces80Pre-1500s alchemical symbol. 20pxNeptunus80Alchemical symbol from the 1600s. 20pxMercurius80Alchemical symbol from 1700 through 1783. 20pxSaturnus82Alchemical symbol circa 1783. 20pxTaurus83Alchemical symbol.    নামাঙ্কিত সমাণুকসমূহ   Chemical SymbolNameAtomic NumberOrigin of SymbolAnActinon86From actinium and emanation.  Name given at one time to 219Rn, an isotope of radon identified in the decay chain of actinium.DDeuterium1From the Greek deuteros.  Name given to 2H.IoIonium90Name given at one time to 230Th, an isotope of thorium identified in the decay chain of uranium.RnRadon86From radium and emanation.  Name given at one time to 222Rn, an isotope of radon identified in the decay chain of radium.  This named isotope later became the official name for element 86 in 1923.TnThoron86From thorium and emanation.  Name given at one time to 220Rn, an isotope of radon identified in the decay chain of thorium.TTritium1From the Greek tri.  Name given to 3H.   অন্যান্য প্রতীক যেগুলো দেখতে মৌলের প্রতীকের মত   Ab: albite   Ac: acetate (also used for the element actinium: see above)  Bn: benzyl  Bz: benzoyl; berzelium (an old suggested name for praseodymium).  Et: ethyl  Me: methyl; any metal atom  Ph: phenyl  Pr: propyl (also used for the element praseodymium: see above)  R: some unspecified element or radical   মন্তব্য    তথ্যসূত্র   Element name etymologies. Retrieved July 15, 2005.  Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1-109 taken from this source.  IUPAC Standard Atomic Weights Revised  (2005).  WebElements Periodic Table. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers 110-116 taken from this source.  Lapp, Ralph E. Matter. Life Science Library. New York: Time Incorporated. 1963.  Leighton, Robert B. Principles of Modern Physics. New York: McGraw-Hill. 1959.   বহিঃসংযোগ   Berzelius’ List of Elements  History of IUPAC Atomic Weight Values (1883 to 1997)  বিষয়শ্রেণী:মৌলিক পদার্থ  an:Lista d'elementos per simbolo ar:قائمة عناصر (رمز) br:Roll an elfennoù hervez o simboloù en:List of elements by symbol es:Lista de elementos por símbolo fi:Luettelo alkuaineista kemiallisen merkin mukaan fr:Liste des éléments par symbole hu:Kémiai elemek listája vegyjel szerint ja:元素の記号順一覧 nl:Lijst van elementen op symbool pt:Lista de elementos por símbolo ru:Список химических элементов по символам sl:Seznam elementov po kemijskem simbolu sv:Lista över grundämnen efter kemiskt tecken th:รายชื่อของธาตุตามสัญลักษณ์