Appeared in: 2024 (2 sets)
Considering the strength of the ligand, the highest excitation energy will be observed in :
(A) $[\text{Co}(\text{H}_2\text{O})_6]^{3+}$
(B) $[\text{Co}(\text{NH}_3)_6]^{3+}$
(C) $[\text{Co}(\text{CN})_6]^{3-}$
(D) $[\text{CoCl}_6]^{3-}$