A) \[Hg\]
B) \[Ag\]
C) \[Co\]
D) \[Zn\]
Correct Answer: C
Solution :
In\[CoC{{l}_{3}}\],\[Co\]is in\[+3\]state \[C{{o}^{3+}}=1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{6}},\,\,4s{}^\circ \] 4 unpaired electrons, so it will be colored.You need to login to perform this action.
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