Dimitri Mendeleev (born Dmitriy Ivanovich Mendeleyev, February 8 (O.S. January 27) 1834 in Tobolsk – February 2 (O.S. January 20) 1907 in Saint Petersburg) was a Russian chemist. He is said to be the main creator of the first version of the periodic table of elements. Many of the predictions made in his periodic table (such as the properties of elements undiscovered at the time) were later proved correct by experiments.
rievna Mendeleeva (née Kornilieva). His grandfather was Pavel Maximovich Sokolov, a priest of Russian Orthodox Church from the Tver regKJOOJHOJion. Ivan, along with his brotherIJMJKs and sisters, obtained new family names while attending theological seminary.Later in life, he invented the periodic table of elements.
Mendeleev is thought to be the youngest of 14 siblings, but the exact number differs among sources. At the age of 13, after the death of his father and the destruction of his mother's factory by fire, Mendeleev attended the Gymnasium in Tobolsk.
In 1849, the now poor Mendeleev family relocated to Saint Petersburg, where he entered the Main Pedagogical Institute in 1850. After graduation, tuberculosis caused him to move to the Crimean Peninsula on the northern coast of the Black Sea in 1855. While there he became a science master of the Simferopol gymnasium №1. He returned with fully restored health to Saint Petersburg in 1857. ≠≠≠≠≠≠≠≠
Periodic Table [change]
Work was made by others in the 1860s to suggest that the elements display periodicity. John Newlands, who published his Law of Octaves in 1865. The lack of spaces for undiscovered elements and the placing of two elements in one box were criticized and his ideas were not accepted. Another was Lothar Meyer, who published a work in 1864, describing 28 elements. Neither attempted to predict new elements. In 1863 there were 56 known elements with a new element being discovered at a rate of approximately one per year.
Other achievements [change]
Mendeleev made other important contributions to chemistry. The Russian chemist and science historian L.A. Tchugayev has characterized him as "a chemist of genius, first-class physicist, a fruitful researcher in the fields of hydrodynamics, meteorology, geology, certain branches of chemical technology (explosives, petroleum, and fuels, for example) and other disciplines adjacent to chemistry and physics, a thorough expert of chemical industry and industry in general, and an original thinker in the field of economy." Mendeleev was one of the founders, in 1869, of the Russian Chemical Society. He worked on the theory and practice of protectionist trade and on agriculture.
- Dmitriy Mendeleev: A Short CV, and A Story of Life, mendcomm.org
- Удомельские корни Дмитрия Ивановича Менделеева (1834-1907), starina.library.tver.ru
- The number of Mendeleev's siblings is a matter of some historical dispute.