Account for the variation of acidic character with increases in the oxidation state of central atom

Explanation

(i) effect of electronegative atom on the `O -H` bond strength
(ii) effect of oxidation state of the central atom on the position of electron cloud present between oxygen atom and the central atom
(iii) relation between the position of the above electron cloud and the charge separation between hydrogen and oxygen atom of the hydroxylradical attached to the central atom
(iv) relation between the above charge separation and ease of formation of hydrogen ion
(v) relation between ease of formation of hydrogen ion with the acidic character of the respective acids