VSEPR Rules

VSEPR Rules - VSEPR Rules 1. Draw the Lewis structure for...

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VSEPR Rules 1. Draw the Lewis structure for the molecule or ion. 2. Count the total number of regions of high electron density (bonding and unshared electron pairs) around the central atom. o Double and triple bonds count as ONE REGION OF HIGH ELECTRON DENSITY . o An unpaired electron counts as ONE REGION OF HIGH ELECTRON DENSITY . o For molecules or ions that have resonance structures, you may use any one of the resonance structures. molecule Lewis structure # regions of high electron density molecule Lewis structure # regions of high electron density BeCl 2 2 BF 3 3 HCN 2 SO 3 3 CO 2 2 NO 2 3 CH 4 4 NH 3 4
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PCl 5 5 SF 6 6 3. Identify the most stable arrangement of the regions of high electron density as ONE of the following: o linear o trigonal planar o tetrahedral o trigonal bipyramidal o octahedral # regions of high electron density best arrangement description 2 linear central atom and regions of high electron density arranged in straight line 3 trigonal planar regions of high electron density directed at the
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This note was uploaded on 04/09/2008 for the course CHEM 106 taught by Professor Goodman during the Fall '08 term at Texas A&M.

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VSEPR Rules - VSEPR Rules 1. Draw the Lewis structure for...

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