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COMEDK2012ChemistryCoordination Compounds

Coordination number of nickel in [ Ni ( C ₂ O ₄ )₃ ]⁴⁻ is

Options

  1. A3
  2. B12
  3. C6
  4. D4

Correct answer

C. 6

Step-by-step solution

Oxalate ( C ₂ O ₄²⁻ ) is an example of bidendate ligand. Three oxalate ligands form six coordinate bond around Ni ²⁺ ion. Hence, coordination number is 6 .

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