Question

Calculate the oxidation number of chromium in K2 Cr2 O7​

Answer 1

Explanation:

Let x be the oxidation number of two chromiums. So, two chromium atoms have an oxidation number of +12 , and so one chromium atom will have an oxidation number of +122=+6 .

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Answer 2

Answer:

So, two chromium atoms have an oxidation number of +12. So one chromium atom will have an oxidation number of +12 /2=+6. So oxidation number of Cr in K2Cr2O7 is +6.