Development of the Periodic Table

Events

Antoine Lavoisler

1778

Antoine Lavoisier wrote the first extensive list of elements containing 33 elements & distinguished between metals and non-metals

Jakob Berzelius

1828

Jakob Berzelius developed a table of atomic weights & introduced letters to symbolize elements

Johann Dobereiner

1828

Johann Dobereiner developed groups of 3 elements with similar properties

Dmitri Mendeleev

1864

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.

John Newlands

1864

John Newlands arranged the known elements in order of atomic weights & observed similarities between some elements

John Newlands

1864

John Newlands arranged the known elements in order of atomic weights & observed similarities between some elements

William Ramsay

1894

William Ramsay discovered the Noble Gases.

Henry Moseley

1913

Henry Moseley determined the atomic number of each of the elements and modified the 'Periodic Law'