Chemistry Practice Problems Calculate Oxidation Number Practice Problems Solution: What is the oxidation state of Cr in each of the f...

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Solution: What is the oxidation state of Cr in each of the following compounds?CrO

Problem

What is the oxidation state of Cr in each of the following compounds?

CrO

Solution

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

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