NEET2011ChemistryCoordination CompoundsActual
Of the following complex ions, which is diamagnetic in nature?
Options
- A[ Ni ( CN )₄ ]²⁻
- B[ CuCl ₄ ]²⁻
- C[ CoF ₆ ]³⁻
- D[ NiCl ₄ ]²⁻
Correct answer
A. [ Ni ( CN )₄ ]²⁻
Step-by-step solution
Electronic configuration of Ni ²⁺ in [ Ni ( CN )₄ ]²⁻ Ni ²⁺ has d s p^2 hybridisation, as CN ⁻ is a strong field ligand. [ Ni ( CN )₄ ]²⁻ is diamagnetic (becasue of the absence of unpaired electrons).