The strongest acid amongst the following is:

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(A) The oxidation states of chlorine in the given oxoacids are as follows:$HClO_4$: $+7$$HClO_3$: $+5$$HClO_2$: $+3$$HClO$: $+1$As the oxidation numbe

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$HClO_4$

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(A) The oxidation states of chlorine in the given oxoacids are as follows:$HClO_4$: $+7$$HClO_3$: $+5$$HClO_2$: $+3$$HClO$: $+1$As the oxidation number of the central halogen atom increases,the acidic strength of the oxoacid increases.Therefore,the order of acidic strength is $HClO_4 > HClO_3 > HClO_2 > HClO$.Thus,$HClO_4$ is the strongest acid.

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