# NEET Chemistry Hydrogen Questions Solved

Assertion : The $\mathrm{O}-\mathrm{O}$ bond length of ${\mathrm{H}}_{2}{\mathrm{O}}_{2}$ is shorter than that of ${\mathrm{O}}_{2}{\mathrm{F}}_{2}.$

Reason : ${\mathrm{H}}_{2}{\mathrm{O}}_{2}$ is an ionic compound.

(D). The lone pairs of electrons on the O atoms are strongly attracted by the electronegative F

atoms. As a result, lone pair-lone pair repulsion of the two oxygen atoms is far less in ${\mathrm{O}}_{2}{\mathrm{F}}_{2}$

than in ${\mathrm{H}}_{2}{\mathrm{O}}_{2}$. As a result, $\mathrm{O}-\mathrm{O}$ bond length is ${\mathrm{O}}_{2}{\mathrm{F}}_{2}$(1.22 ) is much shorter than in

${\mathrm{H}}_{2}{\mathrm{O}}_{2}$ (1.48 $\stackrel{\circ }{\mathrm{A}}$)

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