Which of the following is a heteroleptic complex?
A heteroleptic complex has different types of ligands. [Co(NH₃)5Cl]2+ has NH₃ and Cl−, unlike [Co(NH₃)6]3+ (homoleptic).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Optical Isomerism and Linkage Ionisation Solvate