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Q. The correct order of acidity of oxoacids of halogens is

The p-Block Elements - Part2

Solution:

Acidic strength of oxoacids of a particular halogen atom increases with increase in oxidation number thus the order of acidic strength is
$\overset{+1}{HClO} <$ $\overset{+3}{HClO_2} <$ $\overset{+5}{HClO_3} <$ $\overset{+7}{HClO_4}$