List of elements by symbol

This is a list of chemical elements by symbol, including the current signification used to identify the chemical elements as recognized by the International Union of Pure and Applied Chemistry, as well as proposed and historical signs. Also given is each element's atomic number, atomic mass or most stable isotope, group and period numbers on the periodic table, and etymology of the symbol.

NOTE: placing one's cursor over the entry in the etymology column will display a modern English translation for words of Greek, Latin, or other origin.

Current symbols

 * -style="background-color:#cccc99"
 * As||Arsenic||Greek arsenikos||33||74.92160(2)||15||4
 * -style="background-color:#ffff99"
 * At||Astatine||Greek astatos||85||[210] ||17||6
 * -style="background-color:#ffc0c0"
 * Au||Gold||Latin aurum||79||196.966569(4)||11||6
 * -style="background-color:#cccc99"
 * B||Boron||borax||5||10.811(7) ||13||2
 * -style="background-color:#ffdead"
 * Ba||Barium||Greek barys||56||137.327(7)||2||6
 * -style="background-color:#ffdead"
 * Be||Beryllium||beryl||4||9.012182(3)||2||2
 * -style="background-color:#ffc0c0"
 * Bh||Bohrium||Neils Bohr||107||[264] ||7||7
 * -style="background-color:#cccccc"
 * Bi||Bismuth||corruption of the German wi'ss'muth''||83||208.98040(1)||15||6
 * -style="background-color:#ff99cc"
 * Bk||Berkelium||Berkeley, California||97||[247] || ||7
 * -style="background-color:#ffff99"
 * Br||Bromine||Greek bromos||35||79.904(1)||17||4
 * -style="background-color:#a0ffa0"
 * C||Carbon||Latin carbo||6||12.0107(8) ||14||2
 * -style="background-color:#ffdead"
 * Ca||Calcium||Latin calx||20||40.078(4) ||2||4
 * -style="background-color:#ffc0c0"
 * Cd||Cadmium||corruption of the Greek kadmia||48||112.411(8) ||12||5
 * -style="background-color:#ffbfff"
 * Ce||Cerium||Ceres||58||140.116(1) || ||6
 * -style="background-color:#ff99cc"
 * Cf||Californium||State and University of California||98||[251] || ||7
 * -style="background-color:#ffff99"
 * Cl||Chlorine||Greek chloros||17||35.453(2)  ||17||3
 * -style="background-color:#ff99cc"
 * Cm||Curium||Pierre and Marie Curie and the traditional -um ending||96||[247] || ||7
 * -style="background-color:#ffc0c0"
 * Co||Cobalt||corruption of the German kobold||27||58.933195(5)||9||4
 * -style="background-color:#ffc0c0"
 * Cr||Chromium||Greek chroma||24||51.9961(6)||6||4
 * -style="background-color:#ff6666"
 * Cs||Caesium (Cesium)||Latin caesius||55||132.9054519(2)||1||6
 * -style="background-color:#ffc0c0"
 * Cu||Copper||Latin Cuprum||29||63.546(3) ||11||4
 * -style="background-color:#ffc0c0"
 * Db||Dubnium||Dubna, Russia||105||[262] ||5||7
 * -style="background-color:#ffc0c0"
 * Ds||Darmstadtium||Darmstadt, Germany||110||[271] ||10||7
 * -style="background-color:#ffbfff"
 * Dy||Dysprosium||Greek dysprositos||66||162.500(1) || ||6
 * -style="background-color:#ffbfff"
 * Er||Erbium||Ytterby, Sweden||68||167.259(3) || ||6
 * -style="background-color:#ff99cc"
 * Es||Einsteinium||Albert Einstein||99||[252] || ||7
 * -style="background-color:#ffbfff"
 * Eu||Europium||Europe||63||151.964(1) || ||6
 * -style="background-color:#ffff99"
 * F||Fluorine||Latin fluo||9||18.9984032(5)||17||2
 * -style="background-color:#ffc0c0"
 * Fe||Iron||Latin ferrum||26||55.845(2)||8||4
 * -style="background-color:#ff99cc"
 * Fm||Fermium||Enrico Fermi||100||[257] || ||7
 * -style="background-color:#ff6666"
 * Fr||Francium||France||87||[223] ||1||7
 * -style="background-color:#cccccc"
 * Ga||Gallium||Latin Gallia||31||69.723(1)||13||4
 * -style="background-color:#ffbfff"
 * Gd||Gadolinium||gadolinite||64||157.25(3) || ||6
 * -style="background-color:#cccc99"
 * Ge||Germanium||Germany||32||72.64(1)||14||4
 * -style="background-color:#a0ffa0"
 * H||Hydrogen||Greek hydror||1||1.00794(7)  ||1||1
 * -style="background-color:#c0ffff"
 * He||Helium||Greek helios||2||4.002602(2) ||18||1
 * -style="background-color:#ffc0c0"
 * Hf||Hafnium||Latin Hafnia||72||178.49(2)||4||6
 * -style="background-color:#ffc0c0"
 * Hg||Mercury||Latin hydr'arg'yrum''||80||200.59(2)||12||6
 * -style="background-color:#ffbfff"
 * Ho||Holmium||Latin Holmia||67||164.930 32(2)|| ||6
 * -style="background-color:#ffc0c0"
 * Hs||Hassium||Hesse, Germany||108||[277] ||8||7
 * -style="background-color:#ffff99"
 * I||Iodine||Greek ioeides||53||126.904 47(3)||17||5
 * -style="background-color:#cccccc"
 * In||Indium||indigo blue||49||114.818(3)||13||5
 * -style="background-color:#ffc0c0"
 * Ir||Iridium||Greek iris||77||192.217(3)||9||6
 * -style="background-color:#ff6666"
 * K||Potassium (Kalium)||Latin kalium||19||39.0983(1)||1||4
 * -style="background-color:#c0ffff"
 * Kr||Krypton||Greek kryptos||36||83.798(2) ||18||4
 * -style="background-color:#ffbfff"
 * La||Lanthanum||Greek lanthanien||57||138.90547(7) || ||6
 * -style="background-color:#ff6666"
 * Li||Lithium||Greek lithos||3||6.941(2)  ||1||2
 * -style="background-color:#ff99cc"
 * Lr||Lawrencium||Ernest O. Lawrence||103||[262] ||3||7
 * -style="background-color:#ffbfff"
 * Lu||Lutetium||Latin Lutetia||71||174.967(1) ||3||6
 * -style="background-color:#ff99cc"
 * Md||Mendelevium||Dmitri Mendeleyev||101||[258] || ||7
 * -style="background-color:#ffdead"
 * Mg||Magnesium||Magnesia, Greece||12||24.3050(6)||2||3
 * -style="background-color:#ffc0c0"
 * Mn||Manganese||Latin magnes||25||54.938045(5)||7||4
 * -style="background-color:#ffc0c0"
 * Mo||Molybdenum||Greek molybdos||42||95.94(2) ||6||5
 * -style="background-color:#ffc0c0"
 * Mt||Meitnerium||Lise Meitner||109||[268] ||9||7
 * -style="background-color:#a0ffa0"
 * N||Nitrogen||Greek nitron||7||14.0067(2) ||15||2
 * -style="background-color:#ff6666"
 * Na||Sodium||Latin natrium||11||22.98976928(2)||1||3
 * -style="background-color:#ffc0c0"
 * Nb||Niobium||Niobe||41||92.906 38(2)||5||5
 * -style="background-color:#ffbfff"
 * Nd||Neodymium||Greek neos didymos||60||144.242(3) || ||6
 * -style="background-color:#c0ffff"
 * Ne||Neon||Greek neos||10||20.1797(6) ||18||2
 * -style="background-color:#ffc0c0"
 * Ni||Nickel||German kupfernickel||28||58.6934(2)||10||4
 * -style="background-color:#ff99cc"
 * No||Nobelium||Alfred Nobel||102||[259] || ||7
 * -style="background-color:#ff99cc"
 * Np||Neptunium||Neptune||93||[237] || ||7
 * -style="background-color:#a0ffa0"
 * O||Oxygen||Greek oxys||8||15.9994(3) ||16||2
 * -style="background-color:#ffc0c0"
 * Os||Osmium||Greek osme||76||190.23(3) ||8||6
 * -style="background-color:#a0ffa0"
 * P||Phosphorus||Greek p'hos'phoros''||15||30.973762(2)||15||3
 * -style="background-color:#ff99cc"
 * Pa||Protactinium||Greek protos and actinium||91||231.03588(2) || ||7
 * -style="background-color:#cccccc"
 * Pb||Lead||Latin plumbum||82||207.2(1) ||14||6
 * -style="background-color:#ffc0c0"
 * Pd||Palladium||Pallas and the traditional -dium ending||46||106.42(1) ||10||5
 * -style="background-color:#ffbfff"
 * Pm||Promethium||Prometheus||61||[145] || ||6
 * -style="background-color:#cccc99"
 * Po||Polonium||Poland||84||[210] ||16||6
 * -style="background-color:#ffbfff"
 * Pr||Praseodymium||Greek prasios||59||140.90765(2)|| ||6
 * -style="background-color:#ffc0c0"
 * Pt||Platinum||Greek platina||78||195.084(9)||10||6
 * -style="background-color:#ff99cc"
 * Pu||Plutonium||Pluto||94||[244] || ||7
 * -style="background-color:#ffdead"
 * Ra||Radium||Latin radius||88||[226] ||2||7
 * -style="background-color:#ff6666"
 * Rb||Rubidium||Latin rubidus||37||85.4678(3) ||1||5
 * -style="background-color:#ffc0c0"
 * Re||Rhenium||German Rheinprovinz||75||186.207(1)||7||6
 * -style="background-color:#ffc0c0"
 * Rf||Rutherfordium||Ernest Rutherford||104||261 ||4||7
 * -style="background-color:#ffc0c0"
 * Rg||Roentgenium||Wilhelm Conrad Röntgen||111||[272] ||11||7
 * -style="background-color:#ffc0c0"
 * Rh||Rhodium||Greek rhodon||45||102.905 50(2)||9||5
 * -style="background-color:#c0ffff"
 * Rn||Radon||radium and emanation||86||[220] ||18||6
 * -style="background-color:#ffc0c0"
 * Ru||Ruthenium||Latin Ruthenia||44||101.07(2) ||8||5
 * -style="background-color:#a0ffa0"
 * S||Sulfur (Sulphur)||Latin sulfur||16||32.065(5) ||16||3
 * -style="background-color:#cccc99"
 * Sb||Antimony||Latin stibium||51||121.760(1) ||15||5
 * -style="background-color:#ffc0c0"
 * Sc||Scandium||Scandinavia||21||44.955912(6)||3||4
 * -style="background-color:#a0ffa0"
 * Se||Selenium||Greek selene||34||78.96(3) ||16||4
 * -style="background-color:#ffc0c0"
 * Sg||Seaborgium||Glenn T. Seaborg||106||[266] ||6||7
 * -style="background-color:#cccc99"
 * Si||Silicon||Latin silex||14||28.0855(3) ||14||3
 * -style="background-color:#ffbfff"
 * Sm||Samarium||samarskite||62||150.36(2) || ||6
 * -style="background-color:#cccccc"
 * Sn||Tin||Latin stannum||50||118.710(7) ||14||5
 * -style="background-color:#ffdead"
 * Sr||Strontium||Latin Strontian||38||87.62(1) ||2||5
 * -style="background-color:#ffc0c0"
 * Ta||Tantalum||King Tantalus||73||180.94788(2)||5||6
 * -style="background-color:#ffbfff"
 * Tb||Terbium||Ytterby, Sweden||65||158.92535(2)|| ||6
 * -style="background-color:#ffc0c0"
 * Tc||Technetium||Greek technetos||43||[98] ||7||5
 * -style="background-color:#cccc99"
 * Te||Tellurium||Greek tellus||52||127.60(3) ||16||5
 * -style="background-color:#ff99cc"
 * Th||Thorium||Thor||90||232.03806(2) || ||7
 * -style="background-color:#ffc0c0"
 * Ti||Titanium||the Titans||22||47.867(1)||4||4
 * -style="background-color:#cccccc"
 * Tl||Thallium||Greek thallos||81||204.3833(2)||13||6
 * -style="background-color:#ffbfff"
 * Tm||Thulium||Thule and the traditional -ium ending||69||168.93421(2)|| ||6
 * -style="background-color:#ff99cc"
 * U||Uranium||Uranus||92||238.02891(3)  || ||7
 * -style="background-color:#ffc0c0"
 * Uub||Ununbium||Latin uni, uni, and bi||112||[285] ||12||7
 * -style="background-color:#cccccc"
 * Uuh||Ununhexium||Latin uni, uni, and Greek hex||116||[292] ||16||7
 * -style="background-color:#c0ffff"
 * Uuo||Ununoctium||Latin uni, uni, and oct||118||[294] ||18||7
 * -style="background-color:#cccccc"
 * Uup||Ununpentium||Latin uni, uni, and Greek pent||115||[288] ||15||7
 * -style="background-color:#cccccc"
 * Uuq||Ununquadium||Latin uni, uni, and quadr||114||[289] ||14||7
 * -style="background-color:#cccccc"
 * Uut||Ununtrium||Latin uni, uni, and Greek tri||113||[284] ||13||7
 * -style="background-color:#ffc0c0"
 * V||Vanadium||Vanadis||23||50.9415(1)||5||4
 * -style="background-color:#ffc0c0"
 * W||Tungsten||German w'ol'fram''||74||183.84(1)||6||6
 * -style="background-color:#c0ffff"
 * Xe||Xenon||Greek xenos||54||131.293(6) ||18||5
 * -style="background-color:#ffc0c0"
 * Y||Yttrium||Ytterby, Sweden||39||88.90585(2)||3||5
 * -style="background-color:#ffbfff"
 * Yb||Ytterbium||Ytterby, Sweden||70||173.04(3) || ||6
 * -style="background-color:#ffc0c0"
 * Zn||Zinc||German zin||30||65.409(4)||12||4
 * -style="background-color:#ffc0c0"
 * Zr||Zirconium||zircon||40||91.224(2) ||4||5
 * }

Symbols not currently used
The following is a list of names formerly used or suggested for use in naming the elements listed above. Also included in this list are placeholder names and names given by discredited claimants for discovery. Names which retain local use (as with aluminum and jod) are not included in this table.

Pictographic symbols
The following is a list of pictographic symbols employed to symbolize elements known since ancient times (for example to the alchemists). Not included in this list are symbolic representations of substances previously called elements (such as certain rare earth mineral blends and the classical elements fire and water of ancient philosophy) which are known today to be multi-atomic. Also not included are symbolic representations currently used for elements in other languages such as the Traditional Chinese elements. Modern alphabetic notation was introduced in 1814 by Jöns Jakob Berzelius.

Symbols for named isotopes
The following is a list of isotopes of elements given in the previous tables which have been designated unique symbols. By this it is meant that a comprehensive list of current systematic symbols (in the uAtom form) are not included in the list and can instead be found in the Index to isotope pages chart. Some of the following symbols are no longer in use within the scientific community, however others (most notably some of the named isotopes of hydrogen) continue to be used today. Many of these symbols were designated during the early years of radiochemistry, and several isotopes (namely those in the actinium decay family, the radium decay family, and the thorium decay family) bear placeholder names using the early naming system devised by Ernest Rutherford. Although it is not an isotope, this is perhaps the most useful place to mention that H is the proposed symbol for the only created anti-element, antihydrogen.

Other symbols that look like element symbols

 * Ab: albite
 * Ac: acetate - (also used for the element actinium: see above)
 * Ar: aryl - (also used for the element argon: see above)
 * Bn: benzyl
 * Bu: butyl
 * Bz: benzoyl - (also used for berzelium, an old suggested name for praseodymium).
 * Di: didymium - Rare earth metal that proved to be a mixture of the elements praseodymium and neodymium.
 * Dp: decipium - Rare earth metal that proved to be a mixture of the elements samarium, neodymium and praseodymium.
 * Et: ethyl
 * M: metal - any metal atom
 * Me: methyl
 * Mu: muonium
 * Ph: phenyl
 * Pp: philippium - rare earth metal that proved to be a mixture of the elements holmium and samarium.
 * Pr: propyl - (also used for the element praseodymium: see above)
 * Ps: positronium
 * R: radical - some unspecified element or radical