Which of the following ions will exhibit colo | vedclass

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(B) Ions that possess unpaired electrons exhibit colour in aqueous solutions due to $d-d$ or $f-f$ transitions.$Ti^{3+} (Z = 22)$ has an electronic co

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$Ti^{3+} \, (Z = 22)$

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(B) Ions that possess unpaired electrons exhibit colour in aqueous solutions due to $d-d$ or $f-f$ transitions.$Ti^{3+} (Z = 22)$ has an electronic configuration of $[Ar] 3d^{1}$,which contains $1$ unpaired electron. Therefore,it exhibits colour.$Sc^{3+} (Z = 21)$ has a configuration of $[Ar] 3d^{0}$,meaning it has no unpaired electrons.$La^{3+} (Z = 57)$ has a configuration of $[Xe] 4f^{0}$,and $Lu^{3+} (Z = 71)$ has a configuration of $[Xe] 4f^{14}$. Both lack unpaired electrons in the $f$-subshell,so no $f-f$ transitions are possible.Thus,only $Ti^{3+}$ is coloured.

Which of the following ions will exhibit colour in aqueous solutions?

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