• # question_answer The following acids have been arranged in the order of decreasing acid strength. Identify the correct order. (I) $ClOH$  (II) $BrOH$  (III) $IOH$ [IIT 1996] A) $I>II>III$ B) $II>I>III$ C) $III>II>I$ D) $I>III>II$

The oxidation state of halogens is same +1. Therefore the acidic character depends only upon the electronegativity. Higher the electronegativity of the halogen more easily if will pull the electrons of $O-H$ bond toward itself and hence, stronger is the acid.