1.18 - VSPER Theory Shape Rules
KEY CONCEPTS: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. * Double and triple bonds count as ONE REGION OF HIGH ELECTRON DENSITY. * An unpaired electron counts as ONE REGION OF HIGH ELECTRON DENSITY. * For molecules or ions that have resonance structures, you may use any one of the resonance structures. 3. Identify the most stable arrangement
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