A) \[HClO\]
B) \[HCl{{O}_{2}}\]
C) \[HCl{{O}_{3}}\]
D) \[HCl{{O}_{4}}\]
Correct Answer: D
Solution :
Key Idea: The acidity of oxyacids of halogens increases with increase in oxidation state of halogen. Oxidation state of \[Cl\] in \[HClO=+1\] Oxidation state of \[Cl\] in \[HCl{{O}_{2}}=+3\] Oxidation state of \[Cl\] in \[HCl{{O}_{3}}=+5\] Oxidation state of \[Cl\] in \[HCl{{O}_{4}}=+7\] \[\because \] Oxidation state of chlorine is highest in \[HCl{{O}_{4}}\] \[\therefore \] \[HCl{{O}_{4}}\] has highest acidity among oxyacids of chlorine.
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