Question

In $O_2{F}_2$, which of the following statement(s) is/are incorrect?

• A. $O-F$ bond length in $O_2{F}_2$ is longer than $O-F$ bond length in $O{F}_2$.
• B. The O.N. of oxygen in $O_2{F}_2$ is $+1$.
• C. The $O-O$ bond length in $O_2{F}_2$ is longer than $O-O$ bond length in $H_2{O}_2$.
• D. None of these

Answer 1

The correct option is C The $O-O$ bond length in $O_2{F}_2$ is longer than $O-O$ bond length in $H_2{O}_2$.

The $O-O$ bond length in $O_2{F}_2$ is shorter than $O-O$ bond length in $H_2{O}_2$. $F$ is more electronegative than $H$. Hence, the bond pair of electrons of $O-F$ bond is more towards $F$ than the bond pair of electrons in $O-H$ bond. The partial positive charge on O atoms in $O_2{F}_2$ is more than the partial positive charge on O atoms in $H_2{O}_2$. Due to this, the bond pair of electrons of $O-O$ bond in $O_2{F}_2$ faces more attraction than the bond pair of electrons of $O-O$ bond in $H_2{O}_2$.