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What is the oxidation state of cl in hclo4?
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What is the oxidation state of cl in hclo4?

User Aslamhossin
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There is 1 H atom: (1)(+1) = +1 The oxidation number of O is -2. There are 4 O atoms here: (4)(-2) = -8 So the oxidation state of Cl is +7.

NOTE: The maximum positive oxidation number for chlorine is +7, the same as its group number (VII).
User Shahar Gvirtz
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