Identify the incorrect statement from the following:

The acidic strength of $\displaystyle \mathrm{HX}(\mathrm{X}=\mathrm{F}, \mathrm{Cl}, \mathrm{Br}$ and I$\displaystyle )$ follows the order : $\displaystyle \mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{HI}$.

Fluorine exhibits -$\displaystyle 1$ oxidation state whereas other halogens exhibit +$\displaystyle 1$, +$\displaystyle 3$, +$\displaystyle 5$ and +$\displaystyle 7$ oxidation states also.

The enthalpy of dissociation of $\displaystyle \mathrm{F}_2$ is smaller than that of $\displaystyle \mathrm{Cl}_2$.

Fluorine is stronger oxidising agent than chlorine.