Dimitri Mendeleev was probably the greatest scientist produced by Russia. ...the periodic table was developed by Mendeleev, as well as five other scientists, over a period of about 10 years, after the Italian chemist Cannizzaro had published a consistent set of atomic weights in 1860. It appears that Mendeleev was unaware of the work of several of his co-discoverers, however. ...What is not well known is that about half of the elements that Mendeleev predicted were never found.
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About Dmitri Mendeleev
Dmitri Mendeleev was a 19th-century Russian chemist. Dmitri Ivanovich Mendeleev was a Russian chemist known for formulating the periodic law and creating a version of the periodic table of elements. He used the periodic law not only to correct the then-accepted properties of some known elements, such as the valence and atomic weight of uranium, but also to predict the properties of three elements that were yet to be discovered. Read more on Wikipedia →