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Question
Assertion: The O-O bond length in ozone is identical with that in molecular oxygen.
Reason: The ozone molecule is a resonance hybrid of two canonical structures.
Options
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.
If Assertion is CORRECT but Reason is INCORRECT.
If Assertion is INCORRECT but Reason is CORRECT.
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Solution
If Assertion is INCORRECT but Reason is CORRECT.
Explanation:
The assertion is incorrect because the O-O bond length in ozone (127.8 pm) is not the same as in molecular oxygen (121 pm). However, the reason is correct; ozone is a resonance hybrid of two canonical structures, which explains why both O-O bonds in ozone are equal in length and intermediate between a single and double bond.
