Ozone structure and bond order (O₃ is bent (~117°); two resonance forms; O–O bond order 1.5 (delocalized π system).)

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O₃ is bent (~117°); two resonance forms; O–O bond order 1.5 (delocalized π system).

What each symbol means

SymbolWhat it stands for
BOBond order per O–O link in resonance hybrid

When to use this

Central O is sp²; π delocalization averages single/double character.