valence bond approach

valence bond approach - University of Louisville Chem 201...

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University of Louisville Chem 201-03 Dr. Hoyt Fall 2007 Chem 201 VALENCE BOND APPROACH Hybridization Guidelines Although there are exceptions, follow these guidelines: 1. Assume that central atoms are hybridized. 2. Assume that multiply-bonded terminal atoms are hybridized. 3. Assume that singly-bonded terminal atoms are not hybridized. Hybridization Table sum 2 3 4 hybrid set sp sp 2 sp 3 number of HOs 2 3 4 arrangement of HOs linear trigonal planar tetrahedral +, * Compare: * * VSEPR e.g.a. * ** * linear * * trigonal planar * * tetrahedral * .- Valence Bond Steps 1. Start with the Lewis structure. 2. Identify which atoms are hybridized and which are not. 3. For atoms which are hybridized, determine the hybridization set. Find the sum of the number of bonded atoms and the number of lone pairs, and use this sum to determine
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This note was uploaded on 05/15/2008 for the course CHEM 201 taught by Professor Hoyt during the Fall '07 term at University of Louisville.

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