Question

The purple colour of $\left[Ti\right(H_{2}O{)}_6{]}^{3+}$ ions is due to ______________?

• A. unpaired d-electron
• B. charge transfer
• C. intermolecular vibrations
• D. presence of paired electrons

Answer 1

The correct option is A unpaired d-electron

Any compound or ion showing colour is due to presence of unpair electron. $\left[Ti\right(H_{2}O{)}_6{]}^{3+}$ has $d^1$ configuration and have one unpair electron and because of this it has purple colour.