who developed the first periodic table with 8 columns
History of the periodic table The Russian chemist Dmitri Mendeleev was the first scientist to make a periodic table similar to the one used today.[citation needed] Mendeleev arranged the elements by atomic mass, corresponding to relative molar mass. It is sometimes said that he played 'chemical solitaire' on long train journeys, using cards with various facts about the known elements.[11] On March 6, 1869, Mendeleev gave a formal presentation, The Dependence Between the Properties of the Atomic Weights of the Elements, to the Russian Chemical Society. In 1869, the table was published in an obscure Russian journal and then republished in a German journal, Zeitschrift fÃ¼r Chemie.[12] In it, Mendeleev stated that:
Euphrates The Euphrates (/
Albert Ghiorso Albert Ghiorso (July 15, 1915 â€“ December 26, 2010) was an American nuclear scientist and co-discoverer of a record 12 chemical elements on the periodic table. His research career spanned five decades, from the early 1940s to the late 1990s.
Adonaïs Shelley regarded Adonais as the "least imperfect" of his works. In a 5 June 1821 letter to John and Maria Gisborne, Shelley wrote about the work: "It is a highly wrought piece of art, perhaps better in point of composition than anything I have written."[4]