Wednesday 19 December 2012

chromium=الكروم


chromium=الكروم
كروم عنصر فلزي



ONLINE ETYMOLOGY DICTIONARY:
chromium (n.)
metallic element, 1807, with metallic elemental suffix -ium + Fr. chrome, the name proposed for the new element by Fourcroy and Haüy, from Gk. chroma "color" (see chrome). So called for its colorful compounds. Related: Chromite.
chrome (n.)
1800, from Fr. chrome, coined 1797 by French chemist Nicolas-Louis Vauquelin (1763-1829), from Gk. khroma "color" (see chroma), because it makes colorful compounds. Originally the name given to the metallic element now known as chromium, it continued in use in commerce after the chemical name was changed. As a short form of chromium plating it dates from 1937. 
 
 
 
 

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