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MHT CET202519 Apr 2025Evening ShiftChemistryCoordination CompoundsActual

What is the total number of donor atoms present in Tetracyanonickelate(II) ion?

Options

  1. A2
  2. B4
  3. C6
  4. D1

Correct answer

B. 4

Step-by-step solution

Tetracyanonickelate(II) ion features nickel(II) as the central metal coordinated with four cyanide ligands. Each cyanide ligand ( CN^- ) is monodentate, donating through the carbon atom. With four such ligands, the total number of donor atoms is 4 1 = 4 .

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