Which one has more acidic strength HClO4 or HClO?
HClO4
HClO
Both are equal.
They are not acidic.
In oxoacids, we can determine the acidic strength with the help of the oxidation number of the halogen attached. In HClO4 the oxidizing number for Cl is 7 but that in the case of HClO is 1. So the acidic strength of HClO4 is more than HClO.