Davyum was the proposed name for a chemical element found by the chemist Serge Kern in 1877. It was shown that the material was a mixture of iridium and rhodium. In the 1950 it was proposed that the new metal might have contained also rhenium, which was not discovered at the time of Kern. ...
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http://en.wikipedia.org/wiki/Davyum
• (n.) A rare metallic element found in platinum ore. It is a white malleable substance. Symbol Da. Atomic weight 154.
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http://thinkexist.com/dictionary/meaning/davyum/
<chemistry, element> A rare metallic element found in platinum ore. It is a white malleable substance. ... Atomic weight: 154 ... Abbreviation: Da ... Origin: Named after Sir Humphry Davy, the English chemist. ... (30 Mar 1998) ...
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http://www.encyclo.co.uk/local/20973
Da'vy·um noun [ Named after Sir Humphry
Davy , the English chemist.]
(Chemistry) A rare metallic element found in platinum ore. It is a white malleable substance. Symbol Da. Atomic weight 154.
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http://www.encyclo.co.uk/webster/D/9
Davyum (named after Sir Humphry Davy) was the name given to a supposed metal of the platinum group which Kern professed to have discovered, in 1877, in Russian platinum ore. Its existence as an element, however, was never established.
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http://www.probertencyclopaedia.com/browse/GD.HTM
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