Which of the following complex ions is expected to absorb visible light?
[Ti (en)2(NH3)2]4 +
[Cr (NH3)6]3 +
[Zn (NH3)6]2 +
[Sc (H2O)3 (NH3)3]3+
in the complex has unpaired electrons in the d orbital
Transition metal ions containing completely filled d-orbitals or empty d-orbitals are colorless species.
The correct answer is option 2.