JEE Advanced Chemistry question

The correct order of O − O bond length in O2, H2O2, and O3 is

(A)H2O2 > O3 > O2Correct
(B)O2 > H2O2 > O3
(C)O3 > H2O2 > O2
(D)O2 > O3 > H2O2

Answer: (A)

Solution

Bond length is inversely related to bond order. O2 has a formal O=O double bond (bond order 2, shortest O–O length, ≈121 pm). O3's two equivalent resonance-delocalised O–O bonds

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Question ID VK-159387