Chemistry - Nomenclature Question with Solution | TestHub

Acidic nature$\propto$electro negativity and oxidation number of central atom.
Here$\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_4$is the strongest acid and decreasing order of acidic strength is as follows
$\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_4>\mathrm{H}\mathrm{C}\mathrm{l}{\mathrm{O}}_3>{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4>{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_3$