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 solutions 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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