និមិត្តសញ្ញាគីមី

សូដ្យូមកាបូណាត

Current symbols

និមិត្តសញ្ញាឈ្មោះEtymology of symbolលេខអាតូមRelative atomic massក្រុមខួបMetalliccharacterAcអាក់ទីញ៉ូមfrom Greek aktinos (ray)89&227[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.  7 ActinideAgប្រាក់ (Silver)Latin argentum (silver)47&107.86822107.8682(2)The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.115 Transition metalAlអាលុយមីញ៉ូម (Aluminum) Latin alumen (alum)13&026.9815386826.9815386(8)133 Other metalAmAmericiumthe Americas95&243[243] 7 ActinideArArgonGreek argon (inert)18&039.948139.948(1)The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.183 ឧស្ម័នកំរAsArsenicGreek arsenikos (male)33&074.92160274.92160(2)154 MetalloidAtAstatineGreek astatos (unstable)85&210[210]176 MetalloidAuមាសLatin aurum (gold)79&196.9665694196.966569(4)116 Transition metalBBoronborax5&010.811710.811(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.132 MetalloidBaបារ៉្យូម (Barium)Greek barys (density)56&137.3277137.327(7)26 Alkaline earth metalBeបេរីល្យូម (Beryllium)beryl4&009.01218239.012182(3)22 Alkaline earth metalBhBohriumNiels Bohr107&264[264]77 Transition metalBiBismuth from German wiss muth (white-mass), becoming bismuth in English83&208.980401208.98040(1)156 Other metalBkBerkeliumBerkeley, California97&247[247] 7 ActinideBrBromineGreek bromos (stench)35&079.904179.904(1)174 Diatomic nonmetalCCarbonLatin carbo (charcoal)6&012.0107812.0107(8)142 Polyatomic nonmetalCaកាល់ស្យូម (Calcium)Latin calx (lime)20&040.078440.078(4)24 Alkaline earth metalCdCadmiumGreek kadmia (earth)48&112.4118112.411(8)125 Transition metalCeCeriumCeres58&140.1161140.116(1) 6 LanthanideCfCaliforniumState and University of California98&251[251] 7 ActinideClChlorineGreek chloros (green-yellow)17&035.453235.453(2)173 Diatomic nonmetalCmCuriumPierre and Marie Curie and the traditional -um ending96&247[247] 7 ActinideCnCoperniciumNicolaus Copernicus 112&285[285]127 Transition metalCoCobaltfrom German kobold27&058.933195558.933195(5)94 Transition metalCrChromiumGreek chroma (color)24&051.9961651.9961(6)64 Transition metalCsសេស្យូម (Cesium)Latin caesius (sky blue)55&132.90545192132.9054519(2)16 Alkali metalCuទង់ដែង (Copper)Latin Cuprum (Cyprus)29&063.546363.546(3)114 Transition metalDbDubniumDubna, Russia105&262[262]57 Transition metalDsDarmstadtiumDarmstadt, Germany110&271[271]107 UnknownDyDysprosiumGreek dysprositos66&162.5001162.500(1) 6 LanthanideErErbiumYtterby, Sweden68&167.2593167.259(3) 6 LanthanideEsEinsteiniumAlbert Einstein99&252[252] 7 ActinideEuEuropiumEurope63&151.9641151.964(1) 6 LanthanideFFluorineLatin fluo (flow)9&018.9984032518.9984032(5)172 Diatomic nonmetalFeដែក (Iron)Latin ferrum (iron)26&055.845255.845(2)84 Transition metalFlFleroviumFlerov Laboratory of Nuclear Reactions114&289[289]147 UnknownFmFermiumEnrico Fermi100&257[257] 7 ActinideFrហ្វ្រង់ស្យូម (Francium)France87&223[223]17 Alkali metalGaGalliumLatin Gallia (Gaul)31&069.723169.723(1)134 Other metalGdGadoliniumgadolinite64&157.253157.25(3) 6 LanthanideGeGermaniumGermany32&072.64172.64(1)144 MetalloidHអុីដ្រូសែន (Hydrogen)Greek hydor gennao (liquid-produce)1&001.0079471.00794(7)11 Diatomic nonmetalHeអេល្យូមGreek helios (Sun)2&004.00260224.002602(2)181 ឧស្ម័នកំរHfHafniumLatin Hafnia (Copenhagen)72&178.492178.49(2)46 Transition metalHgMercuryGreek hydrargyrum (liquid silver)80&200.592200.59(2)126 Transition metalHoHolmiumLatin Holmia (Stockholm)67&164.930322164.930 32(2) 6 LanthanideHsHassiumHesse, Germany108&277[277]87 Transition metalIIodineGreek ioeides (violet)53&126.904473126.904 47(3)175 Diatomic nonmetalInIndiumindigo blue49&114.8183114.818(3)135 Other metalIrIridiumGreek iris (rainbow)77&192.2173192.217(3)96 Transition metalKប៉ូតាស្យូម (Potassium)Latin kalium (potassium)19&039.0983139.0983(1)14 Alkali metalKrKryptonGreek kryptos (concealment)36&083.798283.798(2)184 ឧស្ម័នកំរLaឡង់តានGreek lanthano (escape)57&138.905477138.90547(7) 6 LanthanideLiលីចូម (Lithium)Greek lithos (rock)3&006.94126.941(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.12 Alkali metalLrLawrenciumErnest O. Lawrence103&262[262]37 ActinideLuLutetiumLatin Lutetia (Paris)71&174.9671174.967(1)36 LanthanideLvLivermoriumLawrence Livermore National Laboratory116&292[292]167 UnknownMdMendeleviumDmitri Mendeleyev101&258[258] 7 ActinideMgម៉ាញ៉េស្យូម (Magnesium)Magnesia, Greece12&024.3050624.3050(6)23 Alkaline earth metalMnManganeseGreek magnes (magnet)25&054.938045554.938045(5)74 Transition metalMoMolybdenumGreek molybdos (lead)42&095.94295.94(2)65 Transition metalMtMeitneriumLise Meitner109&268[268]97 UnknownNNitrogenGreek nitron (niter)7&014.0067214.0067(2)152 Diatomic nonmetalNaសូដ្យូម (Sodium)Latin natrium (sodium)11&022.98976928222.98976928(2)13 Alkali metalNbញ៉ូប្យូម (Niobium)Niobe41&092.90638292.906 38(2)55 Transition metalNdNeodymiumGreek neos didymos (novelty-twin)60&144.2423144.242(3) 6 LanthanideNeនេអុងGreek neos (novelty)10&020.1797620.1797(6)182 ឧស្ម័នកំរNiNickelGerman kupfernickel (nickeline)28&058.6934258.6934(2)104 Transition metalNoNobeliumAlfred Nobel102&259[259] 7 ActinideNpNeptuniumNeptune93&237[237] 7 ActinideO2អុកស៊ីសែនGreek oxys (acid)8&015.9994315.9994(3)162 Diatomic nonmetalOsOsmiumGreek osme (odor)76&190.233190.23(3)86 Transition metalPPhosphorusGreek phosphoros (light bearer)15&030.973762230.973762(2)153 Polyatomic nonmetalPaProtactiniumGreek protos and actinium91&231.035882231.03588(2) 7 ActinidePbLeadLatin plumbum (lead)82&207.21207.2(1)146 Other metalPdPalladiumPallas (genitive Pallados)46&106.421106.42(1)105 Transition metalPmPromethiumPrometheus61&145[145] 6 LanthanidePoPoloniumPoland84&210[210]166 Other metalPrPraseodymiumGreek prasios (green)59&140.907652140.90765(2) 6 LanthanidePtPlatinumSpanish platina (silver)78&195.0849195.084(9)106 Transition metalPuPlutoniumPluto94&244[244] 7 ActinideRaរ៉ាដ្យូម (Radium)Latin radius (ray)88&226[226]27 Alkaline earth metalRbរុយប៊ីដ្យូម (Rubidium)Latin rubidus (red)37&085.4678385.4678(3)15 Alkali metalReRheniumGerman Rhe75&186.2071186.207(1)76 Transition metalRfRutherfordiumErnest Rutherford104&26126147 Transition metalRgRoentgeniumWilhelm Conrad Röntgen111&272[272]117 UnknownRhRhodiumGreek rhodon (rose)45&102.905502102.905 50(2)95 Transition metalRnRadonradium and emanation86&220[220]186 ឧស្ម័នកំរRuRutheniumLatin Ruthenia (Russia)44&101.072101.07(2)85 Transition metalSSulfur (Sulphur)Latin sulfur16&032.065532.065(5)163 Polyatomic nonmetalSbAntimonyLatin stibium (eye liner)51&121.7601121.760(1)155 MetalloidScស្កង់ដ្យូម (Scandium)Scandinavia21&044.955912644.955912(6)34 Transition metalSeSeleniumGreek selene (Moon)34&078.96378.96(3)164 Polyatomic nonmetalSgSeaborgiumGlenn T. Seaborg106&266[266]67 Transition metalSiSiliconLatin silex (flint)14&028.0855328.0855(3)143 MetalloidSmSamariumsamarskite62&150.362150.36(2) 6 LanthanideSnTinLatin stannum (tin)50&118.7101118.710(7)145 Other metalSrស្ត្រុងចូម (Strontium)Strontian38&087.62187.62(1)25 Alkaline earth metalTaតង់ដាល់ (Tantalum)King Tantalus73&180.947882180.94788(2)56 Transition metalTbTerbiumYtterby, Sweden65&158.925352158.92535(2) 6 LanthanideTcTechnetiumGreek technetos (artificial)43&098[98]75 Transition metalTeTelluriumGreek tellus (Earth)52&127.603127.60(3)165 MetalloidThThoriumThor90&232.038062232.03806(2) 7 ActinideTiTitaniumthe Titans22&047.867147.867(1)44 Transition metalTlThalliumGreek thallos (shoot)81&204.38332204.3833(2)136 Other metalTmThuliumThule and the traditional -ium ending69&168.934212168.93421(2) 6 LanthanideUUraniumUranus92&238.028913238.02891(3) 7 ActinideUuoUnunoctiumLatin uni, uni, and oct (one, one, eight)118&294[294]187 UnknownUupUnunpentiumLatin uni, uni, and Greek pent (one, one, five)115&288[288]157 UnknownUusUnunseptiumLatin uni, uni, and sept (one, one, seven)117&294[294]177 UnknownUutUnuntriumLatin uni, uni, and Greek tri (one, one, three)113&284[284]137 UnknownVវ៉ាណាដ្យូម (Vanadium)Vanadis23&050.9415150.9415(1)54 Transition metalWTungstenGerman wolfram (wolf-froth)74&183.841183.84(1)66 Transition metalXeXenonGreek xenos (alien)54&131.2936131.293(6)185 ឧស្ម័នកំរYអុីទ្រីយ៉ូម (Yttrium)Ytterby, Sweden39&088.90585288.90585(2)35 Transition metalYbYtterbiumYtterby, Sweden70&173.043173.04(3) 6 LanthanideZnZincGerman zin (tin)30&065.409465.409(4)124 Transition metalZrZirconiumzircon40&091.224291.224(2)45 Transition metal

Antimatter atoms are denoted by a bar above the symbol for their matter counterpart, so e.g. H is the symbol for antihydrogen.

ឯកសារយោង

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.
Scerri, E.R. "The Periodic Table, Its Story and Its Significance". New York, Oxford University Press. 2007.