Question

What is the oxidation number of chromium in chromyl chloride?

• A. 3
• B. 6
• C. 4
• D. none of these

Answer 1

Answer: (B)

6

Answer 2

The oxidation number of Cr in chromyl chloride $(Cr{{O}_{2}}C{{l}_{2}})$ can be calculated as follows: $x+2\,(-2)+2\,(-1)=0$ $x-4-2=0$ $x=+\,6$