Define the following terms: Homoleptic and heteroleptic complexes.

(N/A) Homoleptic and heteroleptic complexes:
$(a)$ Homoleptic Complexes: Complexes in which a metal is bound to only one kind of donor groups are known as homoleptic.
Example: $[Co(NH_3)_6]^{3+}, [Ni(CO)_4]$ etc.
$(b)$ Heteroleptic Complexes: Complexes in which a metal is bound to more than one kind of donor groups are known as heteroleptic.
Example: $[Co(NH_3)_4Cl_2]^{+}, [Co(CN)_2Cl_2]^{+}$ etc.