Lev Aleksandrovich Chugaev
Lev Aleksandrovich Chugaev was a Russian chemist. At the height of his career, he was professor of chemistry at the University of Petersburg, being the successor to Mendeleev. He was active in the fields of inorganic chemistry, especially platinum group complexes, as well as organic chemistry. He is also known as Leo Aleksandrovich Tschugaeff or Tschugaev.
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Source: Wikipedia