In which case,the order of acidic strength is | vedclass

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Question

(B) For hydrohalic acids $(HI, HBr, HCl, HF)$,the acidic strength increases down the group due to the decrease in bond dissociation energy: $HI > HBr

Vedclass · Accepted Answer

$HIO_4 > HBrO_4 > HClO_4$

Vedclass · Answer

(B) For hydrohalic acids $(HI, HBr, HCl, HF)$,the acidic strength increases down the group due to the decrease in bond dissociation energy: $HI > HBr > HCl > HF$.For oxoacids of halogens,the acidic strength is directly proportional to the electronegativity of the halogen atom when the oxidation state is the same.In $HIO_4, HBrO_4,$ and $HClO_4$,the central atoms are in the same oxidation state $(+7)$. Since electronegativity follows the order $Cl > Br > I$,the correct order of acidic strength is $HClO_4 > HBrO_4 > HIO_4$.Therefore,the order given in option $B$ is incorrect.

In which case,the order of acidic strength is not correct?

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