Timeline of major developments and scientists involved in the evolution of the periodic table

  • 3500 BCE

    _____

    Iron is discovered
  • 3000 BCE

    _____

    Silver is discovered
  • 3000 BCE

    _____

    Gold is discovered
  • 2100 BCE

    _____

    Tin is discovered
  • 1600 BCE

    _____

    Antimony is discovered
  • 1500 BCE

    _____

    Bismuth is discovered
  • 1500 BCE

    _____

    Mercury is discovered
  • 1250

    _____

    Albertus Magnus discovers Arsenic
  • _____

    Hennig Brandt discovers Phosphorus
  • _____

    Georg Brandt discovers Cobalt
  • _____

    Andreas Marggraf identifies Zinc as an element although it was known to the Greeks and Romans before 20BC
  • _____

    Platinum is taken to Europe although it was known to native South Americans before Columbus
  • _____

    Axel Fredrik Cronstedt discovers Nickel
  • _____

    Joseph Black discovers Magnesium
  • _____

    Henry Cavendish discovers Hydrogen
  • _____

    Daniel Rutherford discovers Nitrogen
  • _____

    Joseph Priestley, and Carl Wilhelm Scheele both independently discover Oxygen
  • _____

    Carl Wilhelm Scheele discovers Chlorine
  • _____

    Johan Gottlieb Gahn discovers Manganese
  • _____

    Peter Jacob Hjelm discovers Molybdenum
  • _____

    Franz-Joseph Müller von Reichenstein discovers Tellurium
  • _____

    Juan Elhuyar and Fausto Elhuyar co-discover Tungsten
  • _____

    Martin Heinrich Klaproth discovers Zirconium
  • _____

    Martin Heinrich Klaproth discovers Uranium
  • _____

    Adair Crawford discovers Strontium
  • _____

    William Gregor discovers Titanium
  • _____

    Johan Gadolin discovers Yttrium
  • _____

    Nicholas Louis Vauquelin discovers Beryllium
  • _____

    Nicholas Louis Vauquelin discovers Chromium
  • _____

    Andrés Manuel del Rio discovers Vanadium
  • _____

    Charles Hatchett discovers Niobium
  • _____

    Anders Gustav Ekeberg discovers Tantalum
  • _____

    William Hyde Wollaston discovers Rhodium
  • _____

    William Hyde Wollaston discovers Palladium
  • _____

    Jöns Jacob Berzelius and Wilhelm Hisinger co-discover Cerium
  • _____

    Smithson Tennant discovers Osmium
  • _____

    Smithson Tennant discovers Iridium
  • _____

    Humphry Davy discovers Sodium
  • _____

    Humphry Davy discovers Potassium
  • _____

    Louis-Josef Gay-Lussac, Louis-Jacques Thénard, and Humphry Davy all independently discover Boron
  • _____

    Humphry Davy discovers Calcium
  • _____

    Humphry Davy discovers Barium
  • _____

    Bernard Courtois discovers Iodine
  • _____

    Johan August Arfvedson discovers Lithium
  • _____

    Jöns Jacob Berzelius discovers Selenium
  • _____

    Friedrich Stromeyer discovers Cadmium
  • _____

    Jöns Jacob Berzelius discovers Silicon
  • _____

    Hans Oersted discovers Aluminium
  • _____

    Antoine-Jérôme Balard and Carl Löwig both independently discover Bromine
  • _____

    Jöns Jacob Berzelius discovers Thorium
  • _____

    Carl Gustav Mosander discovers Lanthanum
  • _____

    Carl Gustav Mosander discovers Terbium
  • _____

    Carl Gustav Mosander discovers Erbium
  • _____

    Karl Karlovich Klaus discovers Ruthenium
  • _____

    Jacob .A. Marinsky, Lawrence E. Glendenin, and Charles D. Coryell all co-discover Promethium
  • _____

    Gustav Kirchhoff and Robert Bunsen co-discover Caesium
  • _____

    Gustav Kirchhoff and Robert Bunsen co-discover Rubidium
  • _____

    William Crookes discovers Thallium
  • _____

    Alexandre Béguyer de Chancourtois puts forward his idesa of the telluric spiral
  • _____

    Ferdinand Reich and Hieronymous Richter co-discover Indium
  • _____

    John Newlands puts forward his law of octaves
  • _____

    JUlius Lothar Meyer presented a table of only 28 elements
  • _____

    Dmitri Mendeleev discovers the periodic table
  • _____

    Paul-Émile Lecoq de Boisbaudran discovers Gallium
  • _____

    Per Teodor Cleve at Uppsala and Marc Delafontaine and Louis Soret both independently discover Holmium
  • _____

    Jean Charles Galissard de Marignac discovers Ytterbium
  • _____

    Lars Frederik Nilson discovers Scandium
  • _____

    Paul-Émile Lecoq de Boisbaudran discovers Samarium
  • _____

    Per Teodor Cleve discovers Thulium
  • _____

    Jean Charles Galissard de Marignac discovers Gadolinium
  • _____

    Carl Auer von Welsbach discovers Praseodymium
  • _____

    Carl Auer von Welsbach discovers Neodymium
  • _____

    Henri Moissan discovers Fluorine
  • _____

    Clemens Winkler discovers Germanium
  • _____

    Paul-Émile Lecoq de Boisbaudran discovers Dysprosium
  • _____

    Lord Rayleigh and Sir William Ramsay co-discover Argon
  • _____

    Sir William Ramsay and independently Per Teodor Cleve and Nils Abraham Langlet in Uppsala discover Helium
  • _____

    Sir William Ramsay and Morris Travers co-discover Neon
  • _____

    Sir William Ramsay and Morris Travers co-discover Krypton
  • _____

    Sir William Ramsay and Morris Travers co-discover Xenon
  • _____

    Marie Curie discovers Polonium
  • _____

    Pierre Curie and Marie Curie co-discover Radium
  • _____

    Andrew Debierne discovers Actinium
  • _____

    Friedrich Ernst Dorn discovers Radon
  • _____

    Eugène-Anatole Demarçay discovers Europium
  • _____

    J.J. Thompson proposes his idea of the plum pudding model
  • _____

    Georges Urbain and Charles James both independently discover Lutetium
  • _____

    Ernest Rutherford discovers the Atomic model of the atom
  • _____

    Kasimir Fajans and Otto Göhring co-discover Protactinium
  • _____

    George Charles de Hevesy and Dirk Coster co-discover Hafnium
  • _____

    Walter Noddack, Ida Tacke and Otto Berg co-discover Rhenium
  • _____

    Carlo Perrier and Emilio Segrè co-discover Technetium
  • _____

    Marguerite Perey discovers Francium
  • _____

    Dale R. Corson, Kenneth Ross MacKenzie and Emilio Segrè co-discover Astatine
  • _____

    Edwin McMillan and Philip Abelson co-discover Neptunium