NOTES: Periodic Table KEEP THIS IN YOUR BINDER EXPLANATION: On the following pages is a collection of all the known chemical elements in the universe. There are 92 naturally occurring elements and over a dozen new elements that have been artificially produced by nuclear reactors in laboratories since 1938. Following each name is a chemical symbol which is a kind of chemical shorthand. Like accepted abbreviations for mister (Mr.) or New York (N.Y.), there are also accepted symbols for each of the elements, called atomic symbols. A symbol is composed of one or two letters that have been assigned to represent that particular element. The first letter is always a capital. If there is a second letter, it is always lower case. The next column lists the atomic number. This is the number of protons or positive charges that each atom of this element has in its nucleus. The atomic number determines the identity of an atom. The last column briefly explains an element's origin, name and history. List of the Elements Actinium Ac 89 1900, Greek aktis, ray Aluminum Al 13 Latin alumen, substance with astringent taste Americium Am 95 1944, for America Antimony Sb 51 Greek antimonos, opposed to solitude Argon Ar 18 Greek argos, inactive, neutral Arsenic As 33 13th century, Greek arsenikos, bold, valiant Astatine At 85 1940, Greek astatos, unstable Barium Ba 56 1808, Greek baros, heavy Berkelium Bk 97 1949, for Berkeley, California Beryllium Be 4 1797, Latin beryl, mineral Bismuth Bi 83 15-th century, German Weisse Masse, white substance Boron B 5 1808, Arabic borak, white; boron is a black powder. Bromine Br 35 1826, Greek bromos, a stench Cadmium Cd 48 1817, Latin kadmia, calamine, a zinc ore Calcium Ca 20 1808, Latin calcis, also calx, lime Californium Cf 98 1950, for the State and the University of California Carbon C 6 prehistoric, Latin carbo, coal Cerium Ce 58 1804, for the asteroid Ceres, discovered 1801 Cesium Cs 53 1860, Latin coesius, sky blue Chlorine Cl 17 1808, Greek chloros, grass green Chromium Cr 24 1797, Greek chroma, bright silvery color Cobalt Co 27 1735, Greek kobolos, a goblin Copper Cu 29 prehistoric, Latin cuprum, copper Curium Cm 96 1944, for Marie and Pierre Curie Dysprosium Dy 66 1886, Greek dysprosilos, hard to get Einsteinium Es 99 1952, for Albert Einstein Erbium Er 68 1843, for Ytterby, a mining town in Sweden Europium Eu 63 1900, for Europe Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Hafnium Helium Holmium Hydrogen Indium Iodine Iridium Iron Krypton Lanthanum Lawrencium Lead Lithium Lutetium Magnesium Manganese Mendelevium Mercury Molybdenum Neodymium Neon Neptunium Nickel Niobium Nitrogen Nobelium Osmium Oxygen Palladium Phosphorus Platinum Plutonium Polonium Potassium Praseodymium Fm F Fr Gd Ga Ge Au Hf He Ho H In I Ir Fe Kr La Lw Pb Li Lu Mg Mn Md Hg Mo Nd Ne Np Ni Nb N No Os O Pd P Pt Pu Po K Pr 100 9 87 64 31 32 79 72 2 67 1 49 53 77 26 36 57 103 82 3 71 12 25 101 80 42 60 10 93 28 41 7 102 76 8 46 15 78 94 84 19 59 1953, for Enrico Fermi 1886, Latin fluere, to flow 1939, for France 1886, Johan Gadolin, Finnish Chemist 1875, Latin gallia, Gaul or France 1886, Latin germania, Germany prehistoric, Anglo-Saxon gold, Latin aurum 1922, Latin hafnia, Copenhagen 1895, Greek helios, the sun 1879, Latin holmia, Stockholm 1766, Greek hydro genes, water former 1863, indigo-blue light 1811, Greek iodes, violet-like 1804, Latin iridis, iridescent rainbow color prehistoric, Anglo-Saxon iren or isern, Latin ferrum 1898, Greek kiyptos, hidden 1839, Greek lanthano, concealed 1961, for Ernest 0. Lawrence, inventor of the cyclotron Prehistoric, English led, leed, or lead, Latin plumbum 1817, Greek lithos, stony 1905, Latin lutecia, ancient name of Paris 1774, Latin magnesia, ancient district of Thessaly, Greece 1774, Latin magnes, magnet 1955, for Dmitri Mendeleev, devised first Periodic Table prehistoric, Latin mercurius, the god Mercury and planet 1782, Greek molybdos, lead 1885, Greek neos, new and didymos, twin 1898, Greek neos, new 1940, for the planet Neptune 1750, German Nickel, a goblin or devil 1801, for Niobe, daughter of Tantalus in mythology 1772, Latin nitro, native soda, and gen, born 1957, for Alfred Nobel 1804, Greek osme, smell, odor 1774, Greek oxys, sharp and gen, born or forming 1803, planetoid Pallas, discovered 1801 1669, Greek phosphoros, light bringer 1735, Spanish plata, silver 1940, for the planet Pluto 1898, Poland, native country of co-discoverer Marie Curie 1807, English potash, Latin kalium 1885, Greek praseos, leek-green color and didymos, a Promethium Protactinium Radium Radon Rhenium Rhodium Rubidium Ruthenium Samarium Scandium Selenium Silicon Silver Sodium Strontium Sulfur Tantalum Technetium Tellurium Terbium Thallium Thorium Thulium Tin Titanium Tungsten Pm Pa Ra Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr S Ta Tc Te Tb Tl Th Tm Sn Ti W 61 91 88 86 75 45 37 44 62 21 34 14 47 11 38 16 73 43 52 63 81 90 69 50 22 74 twin 1947, Prometheus, fire bringer god of Greek mythology 1917, Greek protos first, and actinium breaks down to it 1898, Latin radius, ray 1900, from the element radium 1924, Latin Rhenium, Rhine province of Germany 1804, Greek rhodon, a rose 1860, Latin rubidus, red 1845, Latin Ruthenia, Russia 1879, Samarski, a Russian engineer 1879, Scandinavian peninsula 1817, Greek selene, the moon 1823, Latin silex, flint prehistoric, Anglo-Saxon seolfor, Latin argentums 1807, English soda, German natrium, French sodium 1808, town of Strontian, Scotland prehistoric, Latin sulphurum 1802, for Tantalus of Greek mythology,tantalizing 1937, Greek technikos, made artificially 1782, Latin tellus, the Earth 1843, for Ytterby, town in Sweden 1862, Latin thallus, a young shoot 1819, Scandinavian god Thor in mythology 1879, Latin Thule, northernmost part of the world prehistoric, Latin stannum 1791, Greek mythology, Titans, first sons of the Earth 1783, Danish tung sten, heavy stone, mineral wolframite Uranium Vanadium Xenon Ytterbium Yttrium Zinc Zirconium U V Xe Yb Y Zn Zr 92 23 54 70 39 30 40 1789, for the planet Uranus 1830, goddess Vanadin of Scandinavian mythology 1898, Greek xenos, stranger 1905, for Ytterby, a town in Sweden 1843, for Ytterby, a town in Sweden prehistoric, German zink, related to zinn, tin 1824, Arabian Zerk, a precious stone