Which of the following chemical formulas represents a heteroleptic complex?

Step-by-step solution

Heteroleptic complexes are coordination compounds in which the central metal atom or ion is bound to more than one kind of donor group (ligand). In [Pt(NH₃)₂Cl₂] , the central platinum atom is bound to two different types of ligands: ammine ( NH₃ ) and chlorido ( Cl^- ). Therefore, it is a heteroleptic complex. In K₃[Cr(C₂O₄)₃] , [Co(NH₃)₆]Cl₃ , and [Ni(CO)₄] , the central metal is bound to only one type of ligand (oxalato, ammine, and carbonyl, respectively), making them homoleptic complexes. The presence of count