Question

$T{i}^{3+}\left(aq\right)$ is violet while $T{i}^{4+}\left(aq\right)$ is colourless because $-$

• A. There is no crystal field effect in $T{i}^{4+}$
• B. There energy difference between $t_{2g}$ and $e_g$ of $T{i}^{4+}$ is quite high and does not fall in the visible region.
• C. $T{i}^{4+}$ has $d^0$ configuration.
• D. $T{i}^{4+}$ is very small in comparison to $T{i}^{3+}$ and hance does not absorb any radiation.

Answer 1

The correct option is C $T{i}^{4+}$ has $d^0$ configuration.

$T{i}^{+3}$: $d^1$ configuration have one unpaired d-electron so it is colourful but
$T{i}^{+4}$: $d^0$ configuration have zero unpaired d-electron so it is colourless.