Which of the following metal ions are colorle | vedclass

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Question

(B) metal ion is colorless if it has a $d^0$ or $d^{10}$ electronic configuration,meaning there are no unpaired electrons to undergo $d-d$ transitions

Vedclass · Accepted Answer

$Ti^{4+}, Cu^{+}$

Vedclass · Answer

(B) metal ion is colorless if it has a $d^0$ or $d^{10}$ electronic configuration,meaning there are no unpaired electrons to undergo $d-d$ transitions.$1$. $Ti^{4+}$: Atomic number $22$. Electronic configuration is $[Ar] 3d^0 4s^0$. It has $d^0$ configuration,so it is colorless.$2$. $Cu^{+}$: Atomic number $29$. Electronic configuration is $[Ar] 3d^{10} 4s^0$. It has $d^{10}$ configuration,so it is colorless.$3$. $Cu^{2+}$ $(d^9)$,$Cr^{2+}$ $(d^4)$,and $Mn^{3+}$ $(d^4)$ have unpaired electrons and are colored.Therefore,$Ti^{4+}$ and $Cu^{+}$ are colorless.

Which of the following metal ions are colorless?

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