Question

Homoleptic complex from the following complexes is:

• A. Diamminechloridonitrito-N-platinum (II)
• B. Pentaamminecarbonatocobalt (III) chloride
• C. Triamminetriaquachromium (III) chloride
• D. Potassium trioxalatoaluminate (III)

Answer 1

Answer: (D)

Potassium trioxalatoaluminate (III)

Answer 2

Let's analyze each complex to identify the homoleptic complex:

(A) Diamminechloridonitrito-N-platinum (II): This complex contains three different ligands - diammine (NH3), chlorido (Cl-), and nitrito-N (NO2-). It is not a homoleptic complex because it has multiple types of ligands.
(B) Pentaamminecarbonatocobalt (III) chloride: This complex contains two different ligands - pentaammine (NH3) and carbonato (CO32-). It is not a homoleptic complex because it has multiple types of ligands.
(C) Triamminetriaquachromium (III) chloride: This complex contains two different ligands - triammine (NH3) and triaqua (H2O). It is not a homoleptic complex because it has multiple types of ligands.
(D) Potassium trioxalatoaluminate (III): This complex contains only one type of ligand - trioxalato (C2O42-). It is a homoleptic complex because all the ligands surrounding the central metal ion (aluminum in this case) are of the same type.

Therefore, the correct answer is (D): Potassium trioxalatoaluminate (III).