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Resonance structures are separated by a double-headed arrow (↔). Which of the following statements is correct regarding resonance?

1. Resonance increases stability.
2. Resonance decreases stability.
3. Resonance has no effect on stability.
4. Resonance is only applicable to ionic compounds.

Correct answer: Resonance increases stability.

Solution

Resonance increases stability by delocalizing electrons, which reduces the energy of the molecule or ion. This delocalization distributes charge more evenly, making the structure more stable.

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