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MolSynapse / Question bank / p-Block Elements: Groups 17 and 18 / Halogen compounds: HX, oxoacids, bleaching powder

NEET levelSingle correct optionDifficulty 1 of 3ph010

The oxidation state of chlorine in perchloric acid, $HClO X_{4}$ , is

A $+ 5$
B $+ 1$
C $+ 3$
D $+ 7$

Answer: D

Let x be the oxidation state of Cl:

+ 1 + x + 4 (- 2) = 0

, so

x = + 7

.

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