HIS CONTRIBUTION
Discovery of the Periodic Law and his contributions:
The Mendeleev discovery the Periodic Law is very interesting as he was not aiming to find that law or to discover something and be known worldwide, he was actually writing a chemistry textbook to cover inorganic chemistry that was going to be called “The Principles of Chemistry”. However while making this textbook he discovered that there were patterns between all of the elements and groups in the Periodic Table. Moreover with all of the knowledge he had already he was able to figure out even more about this. He first organised all of the elements by atomic weight in a grid-like diagram. In addition with this done he could later foretell the qualities of still unknown elements.
In 1869 he presented his discovery to the Russian Chemical Society, however they only accepted his discovery twenty years later due to the fact that they found three more elements and their qualities matched with Mendeleev’s predictions.
Later on in 1889 Mendeleev presented his research once again in a lecture called “The Periodic Law of the Chemical Elements”. There he also presented the diagram of the periodic table elements that is still used today. Shown on the diagram to the left is the Periodic Table Mendeleev presented.
Apart from discovering the periodic law, Mendeleev contributed with several articles to the “New Brockhaus Encyclopedia”, in addition in 1893 he was named the director of Russia’s new Central Board of Weights and Measures. Mendeleev was also a professor in several universities. ("Dmitri Mendeleev & the Periodic Table: Biography, Contribution & Facts." N.p., n.d. Web. 21 Oct. 2015.)
