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  4. The correct order of the O - O bond length in O2,H2 O2 and O3 is

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Q. The correct order of the $O - O$ bond length in $O_2,H_2 O_2 $ and $O_3 $ is

AIPMTAIPMT 1995Chemical Bonding and Molecular Structure

Solution:

The bond length of $O - O$ in $H _{2} O _{2}$ is $147.5 \,pm$, in $O _{3}$ is $128\, pm$ and in $O _{2}$ it is $121 \,pm$, so the correct order is $O _{2}< O _{3}< H _{2} O _{2}$,