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Skip to main content Thank you for visiting nature. Download PDF. Subjects Chemistry Nuclear physics. Japanese chemist Kosuke Morita is part of a team that has been given credit for discovering element Authors Richard Van Noorden View author publications.
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Rights and permissions Reprints and Permissions. About this article. Cite this article Van Noorden, R. Mendeleev so impressed his instructors that he was retained to lecture in chemistry. After spending and in Germany furthering his chemical studies, he secured a position as professor of chemistry at St. Petersburg University, a position he retained until While writing a textbook on systematic inorganic chemistry, Principles of Chemistry , which appeared in thirteen editions the last being in , Mendeleev organized his material in terms of the families of the known elements which displayed similar properties.
The first part of the text was devoted to the well known chemistry of the halogens. Next, he chose to cover the chemistry of the metallic elements in order of combining power -- alkali metals first combining power of one , alkaline earths two , etc.
However, it was difficult to classify metals such as copper and mercury which had multiple combining powers, sometimes one and other times two.
While tryuing to sort out this dilema, Mendeleev noticed patterns in the properties and atomic weights of halogens, alkali metals and alkaline metals.
In an effort to extend this pattern to other elements, he created a card for each of the 63 known elements. Each card contained the element's symbol, atomic weight and its characteristic chemical and physical properties. When Mendeleev arranged the cards on a table in order of ascending atomic weight grouping elements of similar properties together in a manner not unlike the card arrangement in his favorite solitare card game, patience, the periodic table was formed. From this table, Mendeleev developed his statement of the periodic law and published his work On the Relationship of the Properties of the Elements to their Atomic Weights in The advantage of Mendeleev's table over previous attempts was that it exhibited similarities not only in small units such as the triads, but showed similarities in an entire network of vertical, horizontal, and diagonal relationships.
In , Mendeleev came within one vote of being awarded the Nobel Prize for his work. In cases like this, the known members of the team are listed along with a single year of discovery. Click on an element's name for the full story! Questions and Answers find smaller elements?
Seaborg Ralph A. James Leon O. Morgan Albert Ghiorso Antimony Known since ancient times? Astatine Dale R. Carson K. Thompson Glenn T. Seaborg Kenneth Street, Jr. Albert Ghiorso Carbon Known since ancient times? Curium Glenn T. Larsh Robert M.
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