Question:
Identify the total number of complexes from following list having monodentate ligands in them
(a) Tetracyanonickelate (II) ion
(b) Potassium hexafluoroaluminate (III)
(c) Tetraamminecopper(II) ion
(d) Potassium trioxalatoaluminate (III)
Identify the total number of complexes from following list having monodentate ligands in them
(a) Tetracyanonickelate (II) ion
(b) Potassium hexafluoroaluminate (III)
(c) Tetraamminecopper(II) ion
(d) Potassium trioxalatoaluminate (III)
(a) Tetracyanonickelate (II) ion
(b) Potassium hexafluoroaluminate (III)
(c) Tetraamminecopper(II) ion
(d) Potassium trioxalatoaluminate (III)
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Cyanide, fluoride and ammine are monodentate; oxalate is bidentate.
Updated On: Oct 1, 2026
- \(4\)
- \(3\)
- \(2\)
- \(1\)
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
A monodentate ligand binds the metal through one donor atom. Bidentate ligands bind through two.
Step 2: Detailed Explanation
(a) Tetracyanonickelate(II): CN\(^-\) is monodentate.
(b) Potassium hexafluoroaluminate(III): F\(^-\) is monodentate.
(c) Tetraamminecopper(II): NH\(_3\) is monodentate.
(d) Potassium trioxalatoaluminate(III): oxalate is bidentate, so this one is excluded.
Three complexes, (a), (b) and (c), have only monodentate ligands.
Final Answer:
Three of the listed complexes have monodentate ligands, option (B). \[ \boxed{3\ \text{(B)}} \]
A monodentate ligand binds the metal through one donor atom. Bidentate ligands bind through two.
Step 2: Detailed Explanation
(a) Tetracyanonickelate(II): CN\(^-\) is monodentate.
(b) Potassium hexafluoroaluminate(III): F\(^-\) is monodentate.
(c) Tetraamminecopper(II): NH\(_3\) is monodentate.
(d) Potassium trioxalatoaluminate(III): oxalate is bidentate, so this one is excluded.
Three complexes, (a), (b) and (c), have only monodentate ligands.
Final Answer:
Three of the listed complexes have monodentate ligands, option (B). \[ \boxed{3\ \text{(B)}} \]
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