Selasa, 22 November 2016

Dmitri Ivanovich Mendeleev



Dmitri Ivanovich Mendeleev was born on 2nd of February 1834 in village of Verkhnie Aremzyani, near Tobolsk, Russia. He was a Russian Chemist and the main creator of the periodic table of elements. His Parents are Ivan Pavlovich Mendeleev and Maria Dmitrievna Mendeleeva.His grandfather was Pavel Maximovich Sokolov, a priest of Russian Orthodox Church from the Tver region. Mendeleev is thought to be the youngest of 14 siblings, but the exact number differs between sources.



Gymnasium


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.


Old Map of St.Petersburg
In 1849, Mendeleev and his Family went to Saint Petersburg. There, he entered Main Pedagogical Institute in 1850.
Crimea Peninsula, Black Sea

After graduation in 1855, Mendeleev contracted tuberculosis. Because of that, he moved to the Crimea Peninsula on the northern coast of the Black sea.There he became a science master of the Simferopol gymnasium. In 1857,  he cured, then, he go back to Saint Petersburg. 

Mendeleev's 1871 Periodic Table
After becoming a teacher in 1867, Mendeleev wrote the definitive textbook of his time: Principles of Chemistry. As he attempted to classify the elements according to their chemical properties, he noticed patterns that led him to postulate his periodic table; he claimed to have envisioned the complete arrangement of the elements in a dream.
"I saw in a dream a table where all elements fell into place as required. Awakening, I immediately wrote it down on a piece of paper, only in one place did a correction later seem necessary."
     — Mendeleev, as quoted by Inostrantzev

By adding additional elements following this pattern, Dmitri developed his extended version of the periodic table. 

Dmitri Ivanovich Mendeleev died on 8th of February 1907 in Saint Petersburg because of Influenza.