Question

Oxidation state of Cl in hclo4

Answer 1

There is one H atom: (1)(+1) = +1 The oxidation number of O is -2. There are four O atoms here: (4)(-2) = -8 Therefore, the oxidation state of Cl is +7. NOTE: The maximum positive oxidation number for chlorine is +7, the same as its group number (VII).

Answer 2

Hi mate here is ur query..

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Oxidation state of Cl in HClO4 is "+7"

solution,
let oxn of cl is x

now oxn of H is +1

or oxn of o is -2


Now adding all the terms=0

or 1*1 + x + 4*(-2) =p

or x=7

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Hope this will help you