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Unformatted text preview: These Lewis structures are equivalent except for the placement of the electrons (i.e. the location of the double bond) Equivalent Lewis structures are called resonance structures , or resonance forms The correct way to describe ozone as a Lewis structure would be: This indicates that the ozone molecule is described by an average of the two Lewis structures (i.e. the resonance forms) The important points to remember about resonance forms are: The molecule is not rapidly oscillating between different discrete forms There is only one form of the ozone molecule, and the bond lengths between the oxygens are intermediate between characteristic single and double bond lengths between a pair of oxygens We draw two Lewis structures (in this case) because a single structure is insufficient to describe the real structure...
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