Essay

CARBON ALLOTROPES The Same & Not the Same A curriculum module developed by Matthew A. Armfield from Deerfield High School for northwestern Universitys Nanoscale Science and Engineering Center through the 2005 query watch for Teachers Program Topic Overview Content in a Nutshell Allotropes ar compounds that make up in mildews with different chemical structures. Some common examples of allotropes are phosphorus (white or yellow, red, and faint / purple), oxygen (O2 and O3) and at long last degree centigrade (diamond, graphite, fullerenes and carbon nanotubes, or CNTs). The specific cross of carbon, and its stick to to surrounding atoms leave alone steady down which allotrope carbon will assume. Carbon with sp3 hybridization will contour a tetrahedral lattice, so giving rise to diamond. Carbon with sp2 hybridization will form either graphite (arranged in hexangular sheets), buckyball (60 carbon atoms forming a sphere), or carbon nanotubes (long dig out tubes o f carbon) depending on the conditions in which it is formed.

Diamond and graphite have been cognize since old-fashioned times (the word diamond comes from the ancient greek, adamas means im feasible to tame) but buckminsterfullerene and CNTs have solely been discover within the last twenty years, and are just directly beginning to be characterized. Buckminsterfullerene, C60, was discovered by Kroto, Smalley and coworkers in 1985, although its contingent existence had been discussed by other chemists years earlier. For the first scantily a(prenominal) years after its discovery, it was a laboratory curiosity. However, when it was discovered that gross amounts of C60 were formed by heating graphite rods under carefully c! ontrolled conditions, research on this material took off. One of the first questions internal chemists asked about it was, What are its chemical properties? Since all of the carbons on buckminsterfullerene are sp2 hybridized, C60 could be handle benzene, C6H6, which is an aromatic molecule, or standardised ethylene, which...If you want to get a full essay, order it on our website: OrderEssay.net

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