Dmitri Ivanovich Mendeleev (Dmitry Ivanovich Mendeleyev)
Year and place of Discovery
March 6, 1869
Importance of the Discovery
On March 6, 1869, he presented a paper titled "the Dependence between the Properties of the Atomic Weights of the Elements". In this presentation he did, he "asserted that ‘the elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties,’ or his periodic law." He also presented the periodic table, suggesting that elements arrange themselves into an order depending on their properties and valences.
On November 29, 1870, he extended his logic, declaring that discovery of other elements could be predicted based on the gaps in his newly created periodic table. This would also anticipate the properties of the elements.
In 1868, Mendeleev published " Principles of Chemistry"
In 1861, he published "Organic Chemistry", which was his first book. For it he received he Domidov Prize.
When the elements Gallium (1875), Scandium (1879), and Geranium (1886) were discovered, they proved Mendeleev’s table and laws to be correct.
Facts About Dmitry
* He was the youngest of 17 Children
* He studied at the University of Heidelberg
* Married Feozva Nikitichna
* He left Nikitichna for another woman, Anna Popova
Oakes, Elizabeth H. "Mendeleyev, Dmitry Ivanovich." Science Online. Facts On File, Inc. Web. 9 Oct. 2014. http://www.fofweb.com/activelink2.asp?ItemID=WE40&SID=5&iPin=EWSR0606&SingleRecord=True.
"Mendeleev's Periodic Table." Science Online. Facts On File, Inc. Web. 10 Oct. 2014. http://www.fofweb.com/activelink2.asp?ItemID=WE40&SID=5&iPin=SciIllus05563&SingleRecord=True.