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Unformatted text preview: ns in pi orbitals that are delocalized. C60 fullerene contains 60
carbon atoms (20 hexagons and 12 pentagons). It is a highly symmetrical, closedcarbon-caged molecule. Within each molecule, each carbon atom is covalently bonded
to three other carbon atoms (sp2 hybridized). C60 molecules contain two bond lengths – © IBID Press 2007 1 CHAPTER 4 BONDING
(IB TOPICS 4 AND 14) SUMMARY
the hexagons can be considered "double bonds" and are shorter; the longer bonds in the
pentagonal rings suggest that electron delocalization is poor.
• Lewis Electron-Dot Structures: Structures showing covalent bonds by using symbols of
element(s) involved, and indicating all the valence electrons by using dots, crosses, a
combination of dots and crosses or by using a line to represent a pair of electrons.
• Valence Shell Electron Pair Repulsion (VSEPR) Theory: Electron pairs in the valence shell
of the central atom are...
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This note was uploaded on 09/23/2010 for the course CS 001 taught by Professor Jix during the Spring '10 term at Riverside Community College.
- Spring '10