Chemistry - Complete d-block Question with Solution | TestHub

$d^0\left({\mathrm{Ti}}^{4+},{\mathrm{Sc}}^{3+}\right)$ and $d^3\left({\mathrm{Zn}}^{2+}\right)$ species will not absorb visible light and are colourless whereas $d^3\left({\mathrm{Cr}}^{3+}\right)$ can undergo $d-d$ transition on absorption of visible light of a particular wavelength and will be coloured. Thus, ${\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$ is expected to absorb visible light.