• First 60 elements were found

    In 1860 the first 60 elements were discovered.
  • The first periodic table was published

    The first copy of the periodic table became commercial by Alexandre Beguyer de Chancourtois
  • Dimitri Mendeleev became professor of general chemistry in 1867

    in the year 1867 Dimitri Mendeleev was made the professor of general chemistry.
  • Dimitri Mendeleev periodic table in 1869 had 17 columns with two partial periods of seven elements

  • Dimitri Mendeleev came within Dimitri Mendeleev came one vote of winning the Nobel prize for chemistry

  • Henry Moseley discovered the proton in 1911

  • The periodic table did not stop progressing for another 75 years after Dimitri Mendeleev