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What are the resonance structures of benzoate anion?

I should have 4 resonance structures of benzoate anion, but i only have 2, so far, what are the other 2?

Answer 1

Nolan Allen

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Answer 2

Isaac Aronson

The resonance structures of benzoate anion involve the delocalization of the negative charge throughout the benzene ring. One resonance structure has the negative charge on the oxygen atom, while the other resonance structure places the negative charge on one of the carbon atoms in the benzene ring. Both resonance structures contribute to the overall stability of the benzoate anion.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.