We have to determine the oxidation number of Cr in CrO.
The rules for determination of oxidation states are as follows:
A. General Rules
1. For an atom in its elemental form (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. For an ion (Li+, Al3+, etc.) O.S. = charge
What is the oxidation state of Cr in each of the following compounds?
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