Question 49: Homoleptic complex from the following complexes is :
(1) Pentaamminecarbonatocobalt (III) chloride
(2) Triamminetriaquachromium (III) chloride
(3) Potassium trioxalatoaluminate (III)
(4) Diamminechloridonitrito – N platinum (II)
Answer: Option (3)
Explanation:
A homoleptic complex is a coordination compound in which the central metal atom or ion is surrounded by only one type of ligand.
In Option (1), the complex contains ammine and carbonato ligands,
so more than one type of ligand is present.
In Option (2), the complex contains ammine and aqua ligands,
so it is not homoleptic.
In Option (3), Potassium trioxalatoaluminate (III) contains only oxalate ligands coordinated to the aluminium ion.
Since all the ligands are identical, this complex is homoleptic.
In Option (4), the complex contains ammine, chlorido, and nitrito ligands,
which are different types.
Therefore, the homoleptic complex is Potassium trioxalatoaluminate (III),
and the correct answer is Option (3).
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