A) \[C{{r}^{3+}}\]
B) \[{{V}^{3+}}\]
C) \[S{{c}^{3+}}\]
D) \[T{{i}^{3+}}\]
Correct Answer: C
Solution :
\[S{{c}^{3+}}\]has completely empty d-orbitals, hence it forms a colourless solution in aqueous medium. \[Sc(21):[Ar]3{{d}^{1}}4{{s}^{2}}\] \[S{{c}^{3+}}:[Ar]3{{d}^{0}}4{{s}^{0}}\]
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