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    Question

    Which of the following is not a correct statement?

    A The canonical structures have no real existence. Correct Answer Incorrect Answer
    B Every AB5 molecule does in fact have square pyramidal shape Correct Answer Incorrect Answer
    C The electron-deficient molecules can act as Lewis acids Correct Answer Incorrect Answer
    D Multiple bonds are always shorter than corresponding single bonds. Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    AB5 molecules may have square pyramidal or trigonal bipyramidal geometry. Rest of the statements are correct.

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