The O - H bond length in ${\mathrm{H}}_2\mathrm{O}$ is $\mathrm{x}{ \mathrm{A}}^0$. The $\mathrm{O}-\mathrm{H}$ bond length in ${\mathrm{H}}_2{\mathrm{O}}_2$ is

In solid phase $\mathrm{O}-\mathrm{H}$ bond length in ${\mathrm{H}}_2{\mathrm{O}}_2$ is $98.8\mathrm{pm}$ and in gaseous phase it is $95\mathrm{pm}.$ But $\mathrm{O}-\mathrm{H}$ bond length in water is always$96\mathrm{pm}$.