Question

Complexes in which a metal is attached to only one kind of donor group is called _______

(a) Unidentate

(b) Chelate

(c) Homoleptic

(d) Heteroleptic

This question was posed to me by my college director while I was bunking the class.

Origin of the question is Definitions in section Coordination Compounds of Chemistry – Class 12

Answer 1

The correct answer is (c) Homoleptic

To elaborate: Unidentate and chelate are words associated with ligands, whereas coordination complexes can be either homoleptic or heteroleptic depending upon whether only one kind or different kinds of ligands linked to the metal atom/ion respectively.