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In the 1800's fifty to sixty of the elements in the current periodic table were already discovered. This prompted the scientist of the time to try to construct a table with all the elements of the time in it. Most of the scientists were trying to construct the table by order of atomic mass or by small groups of similar elements. In 1817 a German scientist, Johann Wolfgang Dobereiner, found that certain elements formed groups of three with similar characteristics. Dobereiner found fifteen of these
Names mentioned in this term paper
Dmitri Mendeleev, a German scientist, Johann Wolfgang Dobereiner, John Newlands, Glenn Seaborg, Moseley, Meyer,
Locations mentioned in this term paper
England, United States, Russia,
Keywords referenced in this term paper
periodic table, Mendeleev, the periodic table, scientist, atomic mass, atomic numbers, Dmitri Mendeleev, Johann Wolfgang Dobereiner, the table, the scientists, Glenn Seaborg, United States, octaves, Moseley, fifty, x rays, columns, Russia, lanthanoid, actinoid, theory, England,