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)

Step-by-step solution

(a) Tetracyanonickelate (II) ion: [Ni(CN)₄]²⁻ . The ligand is CN^- , which is a monodentate ligand. (b) Potassium hexafluoroaluminate (III): K₃[AlF₆] . The ligand is F^- , which is a monodentate ligand. (c) Tetraamminecopper(II) ion: [Cu(NH₃)₄]²⁺ . The ligand is NH₃ , which is a monodentate ligand. (d) Potassium trioxalatoaluminate (III): K₃[Al(C₂O₄)₃] . The ligand is C₂O₄²⁻ (oxalate), which is a bidentate ligand. Therefore, there are 3 complexes having monodentate ligands. Answer: 3