Which of the following metal ions is colourle | vedclass

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(B) The electronic configuration of $Sc^{3+}$ is $[Ar] 3d^0$. Since there are no unpaired electrons in the $d$-orbital,$d-d$ transitions are not possi

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$Sc^{3+}$

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(B) The electronic configuration of $Sc^{3+}$ is $[Ar] 3d^0$. Since there are no unpaired electrons in the $d$-orbital,$d-d$ transitions are not possible,making the ion colourless. In contrast,$Ti^{3+}$ $(3d^1)$,$V^{4+}$ $(3d^1)$,and $Cr^{4+}$ $(3d^2)$ contain unpaired electrons,allowing for $d-d$ transitions,which result in the exhibition of colour.

Which of the following metal ions is colourless?

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