[ Ti(H ₂ O) ₆]²⁺ is a colored compound where as [ Zn(H ₂ O) ₆]²⁺ is colorless, because

Step-by-step solution

The atomic number of Titanium (Ti) is 22 . Its ground state electronic configuration is [ Ar ] 3d² 4s² . In the complex [ Ti(H ₂ O) ₆]²⁺ , Titanium is in the +2 oxidation state. The electronic configuration of Ti ²⁺ is [ Ar ] 3d² . Since it has partially filled 3d orbitals, it can undergo d-d transitions, which are responsible for its color. The atomic number of Zinc (Zn) is 30 . Its ground state electronic configuration is [ Ar ] 3d¹⁰ 4s² . In the complex [ Zn(H ₂ O) ₆]²⁺ , Zinc is in the +2 oxidation state. The e