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Which of the following is a **homoleptic** complex?
A$[Co(NH_3)_4Cl_2]^+$
B$[Pt(NH_3)_2Cl_2]$
C$[Co(NH_3)_6]^{3+}$
D$[Co(NH_3)_3Cl_3]$
Answer & Solution
Correct answer: C. $[Co(NH_3)_6]^{3+}$
Homoleptic = all ligands of one type. $[Co(NH_3)_6]^{3+}$ has only NH₃ ligands. The others have a mix (NH₃ + Cl), making them **heteroleptic**.
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