Chemistry - Coordination Chemistry Question with Solution | TestHub

Splitting Behavior: In a tetrahedral field, d-orbitals split into a lower energy $e$ set and a higher energy $t_2$ set with a small splitting energy (${\Delta }_t$), meaning all configurations ($d^1$ to $d^{10}$) form high-spin complexes with both weak ligands like H₂O and Cl⁻.

Analysis of Statement A & C: Since configurations like $d^5$ or $d^8$ are possible (making C correct), they undergo d-d transitions and form colored compounds, making A incorrect.

Analysis of Statement B: For a high-spin $d^8$ configuration, the arrangement is $e^4{t}_2^4$, where the number of electrons in the $e$ set is equal to the $t_2$ set, not always higher, making B incorrect.

Analysis of Statement D: Since H₂O and Cl⁻ have different field strengths, the value of ${\Delta }_t$ changes, absorbing different wavelengths of light and resulting in different colors, making D incorrect.