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NEET levelSingle correct optionDifficulty 1 of 3rx004

The oxidation number of chlorine in $HClO X_{4}$ is

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

Answer: D

Hydrogen is

+ 1

and oxygen is

- 2

. So

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

gives

x = + 7

.

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