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What is the oxidation state of Cr in CrO5?

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in Chemistry – Class 11 by (148k points)
What is the oxidation state of Cr in CrO5?

(a) 3

(b) 4

(c) 5

(d) 6

I had been asked this question during an interview.

The above asked question is from Redox Reactions topic in portion Redox Reactions of Chemistry – Class 11

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Correct choice is (d) 6

For explanation I would say: The oxidation states of oxygens in CrO5 are -1, -1, -1, -1 and -2. The oxidation state of Cr is given by x. Therefore x + 4(-1) + (-2)(1) = 0. X = 6. The oxidation state of chromium in chromium peroxide is 6.

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