http://www.sgforums.com/forums/2297/topics/321917 en-US 60 <blockquote> <div class="quote_from">Originally posted by UltimaOnline:</div> <div class="quote_body"> <p>Image hosted by and property of <a href= "http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif" rel= "nofollow">http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif</a></p> <p><img src= "http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif" alt= "" /></p> <p>&nbsp;</p> <p>Explanation : Notice that for diamond, all of the 4 valence electrons (2s2 2p2) of every carbon atom are involved in tetrahedral bonding (in the form of 4 equivalent&nbsp;sp3 hybrid orbitals), and hence there are no delocalized valence electrons left or available for conduction of electricity, as is the case of carbon's other allotrope, graphite&nbsp;(in which the carbons are sp2 hybridized and each carbon atom has one valence electron not involved in bonding&nbsp;and&nbsp;that&nbsp;can be delocalized to conduct electricity along, but not perpendicular to,&nbsp;the plane of the graphite layers).</p> <p>&nbsp;</p> <p>3D rotating image of Graphite :</p> <p><a href= "http://upload.wikimedia.org/wikipedia/commons/1/1a/Graphite_stereo_animation.gif" rel= "nofollow">http://upload.wikimedia.org/wikipedia/commons/1/1a/Graphite_stereo_animation.gif</a></p> <p>&nbsp;</p> <p>&nbsp;</p> </div> </blockquote> <p><br /> THANKS SO MUCH!</p> Wed, 25 Jun 2008 20:41:53 +0800 www.sgforums.com:2297:321917:8195216 bonkysleuth http://www.sgforums.com/forums/2297/topics/321917 <p>Image hosted by and property of <a href= "http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif" rel= "nofollow">http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif</a></p> <p><img src= "http://ibchem.com/IB/ibfiles/bonding/bon_img/diamond.gif" alt= "" /></p> <p>&nbsp;</p> <p>Explanation : Notice that for diamond, all of the 4 valence electrons (2s2 2p2) of every carbon atom are involved in tetrahedral bonding (in the form of 4 equivalent&nbsp;sp3 hybrid orbitals), and hence there are no delocalized valence electrons left or available for conduction of electricity, as is the case of carbon's other allotrope, graphite&nbsp;(in which the carbons are sp2 hybridized and each carbon atom has one valence electron not involved in bonding&nbsp;and&nbsp;that&nbsp;can be delocalized to conduct electricity along, but not perpendicular to,&nbsp;the plane of the graphite layers).</p> <p>&nbsp;</p> <p>3D rotating image of Graphite :</p> <p><a href= "http://upload.wikimedia.org/wikipedia/commons/1/1a/Graphite_stereo_animation.gif" rel= "nofollow">http://upload.wikimedia.org/wikipedia/commons/1/1a/Graphite_stereo_animation.gif</a></p> <p>&nbsp;</p> <p>&nbsp;</p> Mon, 23 Jun 2008 22:10:40 +0800 www.sgforums.com:2297:321917:8189981 UltimaOnline http://www.sgforums.com/forums/2297/topics/321917 <p>I need to recruit some of your help here, pressingly. I'm looking for information and DIAGRAMS depicting why diamonds are not able to conduct electricity. The information should simply consists of 1 or 2 sentences, preferably captions. The most crucial thing I need is diagrams since I can do the explanations myself.</p> <p>Thanks.</p> Mon, 23 Jun 2008 21:04:27 +0800 www.sgforums.com:2297:321917:8189639 bonkysleuth http://www.sgforums.com/forums/2297/topics/321917