Which of the following ions will exhibit colo | vedclass

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Question

$\mathrm{Ti}^{3+}(\mathrm{Z}=22)$

Ions which have unpaired electrons electrons exhibit colour in solution.

$Ti$ $^{3+}$ has an outer electronic

Vedclass · Accepted Answer

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

Vedclass · Answer

$\mathrm{Ti}^{3+}(\mathrm{Z}=22)$

Ions which have unpaired electrons electrons exhibit colour in solution.

$Ti$ $^{3+}$ has an outer electronic configuration of $4 s^{0} 3 \mathrm{d}^{1},$ i.e., $1$ unpaired electron.

Thus its solution will be coloured.

$\mathrm{S} \mathrm{c}^{3+} \rightarrow \mathrm{d}^{0}$

In case of $\mathrm{La}^{3+}, 4 \mathrm{f}^{0}$ configuration is present and in $\mathrm{Lu}^{3+}, 4 \mathrm{f}^{14}$ is present.

So, there is no possibility of $f-f$ transition, hence these ions do not appear coloured.

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

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