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Sir Frances Bacon
published "The Proficience and Advancement of Learning" which contained a description of what would later be known as the scientific method. -
Antoine Lavoisier
wrote the first extensive list of elements containing 33 elements & distinguished between metals and non-metals -
Jakob Berzelius
Developed a table of atomic weights & introduced letters to symbolize elements -
John Newlands
Arranged the known elements in order of atomic weights & observed similarities between some elements -
Lothar Mayer
Lothar Meyer develops an early version of the periodic table, with 28 elements organized by valence -
Dmitri Mendeleev
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. -
Henry Moseley
Henry Moseley determined the atomic number of each of the elements and modified the 'Periodic Law'. -
Glenn Seaborg
Glenn Seaborg synthesised transuranic elements (the elements after uranium in the periodic table)