Timeline of chemical element discovery

   * 1737 - George Brandt, discovered Cobalt. From the German word kobalt or
     kobold (evil spirit).
   * 1766 - Henry Cavendish discovered Hydrogen. From the Greek words hud�r
     (water) and gennan (generate).
   * 1774 - John Priestly discovered Oxygen. From the Greek words oxus
     (acid) and gennan (generate).
   * 1774 - Carl Wilhelm Scheele discovered chlorine.
   * 1789
        o Martin Klaproth discovered Uranium. After the planet Uranus.
        o Martin Klaproth discovered Zirconium. Named from Zircon (mineral).
   * 1794 - Johann Gadolin discovered Yttrium. After Ytterby (a town in
     Sweden).
   * 1803 - Smithson Tenant discovered Osmium. From the Greek word osm�
     (odor).
   * 1807
        o Humphrey Davy discovered Potassium. From the Latin word kalium.
        o Humphrey Davy discovered Sodium. From the Latin word natrium
          (sodium).
   * 1808
        o Humphrey Davy discovered Calcium. From the Latin word calcis
          (lime).
        o Humphrey Davy discovered Barium. From the Greek word barys
          (heavy).
   * 1817 - Johann Arfvedson discovered Lithium. From the Greek word lithos
     (stone).
   * 1878 - Jena de Marignac discovered Ytterbium. After Ytterby (a town in
     Sweden).
   * 1886
        o Joseph Henri Moissan discovered Fluorine. From the Latin word fluo
          (flow).
        o Paul Emile Lecoq de Boisbaudran discovered Dysprosium. From the
          Greek word dysprositos (hard to get at).
   * 1894 - William Ramsey discovered Argon. From the Greek word argon
     (inactive).
   * 1895 - William Ramsey discovered Helium. From the Greek word h�lios
     (sun).
   * 1898
        o William Ramsey discovered Neon. From the Greek word neos (new).
        o William Ramsey discovered Krypton. From the Greek word xenon
          (stranger).
        o William Ramsey discovered Xenon. From the Greek word kryptos
          (hidden).
        o Fredrich Ernst Dorn discovered Radon. From Radium.
        o Pierre and Marie Curie discovered Polonium. From Poland.
   * 1907 - Georges Urbain discovered Lutetium. From Lutetia (ancient name
     of Paris).
   * 1957 - Nobel Institute for Physics discovered Nobelium. After Alfred
     Nobel.
   * 1961 - Albert Ghiorso discovered Lawrencium. After Ernest Lawrence.
   * 1970 - Albert Ghiorso discovered Dubnium. After Dubna, Russia.

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