The history of the periodic table

By Vanessa Leung

  • Lavoisier

    He discovered and wrote the first extensive list of elements containing 33 elements as well as distinguishing the difference between metals and non-metals.

  • Johann Dobereiner

    1817-1829 Johann Dobereiner developed the triads which were groups of 3 elements with similar properties

  • Lothar Meyer

    In 1864, Meyer formed a shortened version of the periodic table and included half of the known elements that we know of today

  • John Newlands

    He published in 1865 his 'Law of Octaves', which stated that 'any given element will exhibit similar behavior to the eighth element following it in the table.'

  • Lothar Meyer

    1868, Meyer made an extended version of the periodic table which he gave to a colleague to evaluate

  • Mendeleev

    Mendeleev published his periodic table in 1869. He organized his group of elements depending on their atomic mass

  • Lothar Meyer

    The extended version of Meyer's periodic table was not published until 1870, which was a year after Mendeleev's table was published

  • Glen Seaborg

    Glen Seaborg artificially produced heavy mass elements in 1940.
    These elements were called actinides.