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18 August, 17:20

When can resonance structures be written for a molecule

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  1. 18 August, 18:59
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    When there are pi bonds as well as the sigma bonds, and therefore a double or triple bond. When it can change where that double bond is you can draw a resonance structure. Ozone, O3, has two resonance structures because you can rearrange the bonds in it.
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