MCQ
The charge on cobalt in ${[Co{(CN)_6}]^{3 - }}$ is
- A$- 6$
- B$-3$
- ✓$3$
- D$6$
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Reason : Transition metals have a large energy difference between the $ns^2$ and $(n -1)d$ electrons.
$(iii)$ Size $(iv)$ Energy level