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Which of the molecules below must be shown with resonance structures?

I. C2H2
II. CO
III. CO2 ...?

1 Answer

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It seems that you have missed the given options for this question, but anyway, the correct answer is NONE OF THE ABOVE. None of the molecules given must be shown with resonance structures. A resonance structure is defined as the way or presenting delocalized electrons within certain molecules or polyatomic ions. This bonding cannot be expressed by one single Lewis structure. Hope this answer helps.
User Sathwick
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