Which is correct order of basic strength
(D) None of these
Increase in acid strength indicated decrease in basic strength of the conjugate base. Thus for HOCl<HOCl2 <HOCl3 <HOCl4 , the base strength of anion follows the order . The addition of oxygen atom provides a large volume so that charge of the anion is easily accomodated.A large uninegative ion attracts and holds a proton less strongly than a small uninegative ion.