Development of The Periodic Table

By ZoePetersen
  • 1940 BCE

    Glenn Seaborg

    Synthesised transuranic elements (the elements after uranium in the periodic table).
  • 1913 BCE

    Henry Moseley

    Determined the atomic number of each of the elements and modified the 'Periodic Law'.
  • 1864 BCE

    John Newlands

    Arranged the known elements in order of atomic weights & observed similarities between some elements
  • 1864 BCE

    Dmitri Mendeleev

    Produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other. His Periodic Table included the 66 known elements organized by atomic weights.
  • 1864 BCE

    Lothar Meyer

    Developed an early version of the periodic table, with 28 elements organized by valence.
  • 1828 BCE

    Johann Dobereiner

    Developed groups of 3 elements with similar properties.
  • 1778 BCE

    Antoine Lavoisier

    Wrote the first extensive list of elements containing 33 elements & distinguished between metals and non-metals.