BRONZE BUST O RUSSIAN CHEMISTRY GENIUS – DMITRY MENDELEEV AUTHOR PERIODIC TABLE
Item: BRONZE BUST O RUSSIAN CHEMISTRY GENIUS – DMITRY MENDELEEV AUTHOR PERIODIC TABLE
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Russian Metalware, Periodic Table of Elements, Russian Metal Bust, Russian Metal, Metal Statue, Cold War Era Memorabilia, Chemistry, Dmitry Mendeleev
Dmitri Ivanovich Mendeleev (27 January 1834 – 20 January 1907) was a Russian chemist and inventor. He formulated the Periodic Law, created his own version of the periodic table of elements, and used it to correct the properties of some already discovered elements and also to predict the properties of elements yet to be discovered.
n 1863 there were 56 known elements with a new element being discovered at a rate of approximately one per year. Other scientists had previously identified periodicity of elements. John Newlands described a Law of Octaves, noting their periodicity according to relative atomic weight in 1864, publishing it in 1865. His proposal identified the potential for new elements such as germanium. The concept was criticized and his innovation was not recognized by the Society of Chemists until 1887. Another person to prose a periodic table was Lothar Meyer, who published a paper in 1864 describing 28 elements classified by their valence, but with no prediction of new elements. Meyer, who is often credited with the discovery of the periodic system, opposed and criticized the Periodic Law. After becoming a teacher, Mendeleev wrote the definitive textbook of his time: Principles of Chemistry (two volumes, 1868–1870). As he attempted to classify the elements according to their chemical properties, he too noticed patterns that led him to postulate his periodic table. Mendeleev was unaware of the earlier work on periodic tables going on in the 1860s. He made the following table, and by adding additional elements following this pattern, developed his extended version of the periodic table.