MCQ
Oxidation number of cobalt in $K[Co{(CO)_4}]$ is
- A$+1$
- B$+3$
- ✓$-1$
- D$-3$
✓
Answer
Correct option: C.
$-1$
c
(c)$K[\mathop C\limits^ * o{(CO)_4}]$
(c)$K[\mathop C\limits^ * o{(CO)_4}]$
$1 + x + 0 = 0;\,\,x = - 1$.
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