What is the oxidation state of Cr in CrO6

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Please find below the solution for your asked question-

Assumption- Generally, the compound CrO₅ exists in nature as Cr cannot extend its oxidation beyond +6. Hence, we are assuming the compound to be CrO₅.

CrO₅ is a compound that has the structure which has peroxide linkage (O₂^2-) as shown:
 

 

Thus the oxidation number of Chromium can be calculated as:

Let the oxidation number of Cr be x,

Then, x - 2 - 2(2) = 0

x - 2 - 4 = 0

x - 6 = 0

Thus, x = +6

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