PPT Slide

• In I, oxygen B has a double bond to oxygen A and a single bond  to oxygen C. In II, the single and double bonds are reversed.

• Neither Lewis structure depicts O 3 accurately.

• Experiments show that the two bonds in ozone are identical, with  properties that lie between those of an O–O bond and an O=O bond.

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• For molecules and ions with multiple bonds adjacent to single bonds, more than one Lewis structure may be possible.

• For ozone, (O 3, 18e–), two valid Lewis structures can be written:

Concept 10-2. How resonance and electron delocalization explain bond properties in many compounds with double bonds adjacent to single bonds

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