Q. The oxidation number of cobalt in $K\lbrack Co(CO)_{4}\rbrack$is
A) +1
B) +3
C) $- 1$
D) $- 3$
Explanation
(c)
Let the oxidation number of cobalt is x in K [$Co(CO)_{4}$].
1+x+0=0
x =$-$1
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.