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  4. The correct order of O-O bond length in O2,H2O2 and O3 .

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Q. The correct order of $ O-O $ bond length in $ {{O}_{2}},{{H}_{2}}{{O}_{2}} $ and $ {{O}_{3}} $ .

Rajasthan PETRajasthan PET 2006

Solution:

The $ O-O $ bond length in $ {{H}_{2}}{{O}_{2}},{{O}_{3}},{{O}_{2}} $ is as:
$ {{H}_{2}}{{O}_{2}}=1.48\overset{o}{\mathop{\text{A}}}\, $
$ {{O}_{3}}=1.26\overset{o}{\mathop{\text{A}}}\, $
$ {{O}_{2}}=1.21\overset{o}{\mathop{\text{A}}}\, $
Hence, the decreasing order of $ O-O $ bond length is as:
$ {{H}_{2}}{{O}_{2}}>{{O}_{3}}>{{O}_{2}} $