COMEDK2023ChemistryCoordination Compounds
Which among the following is diamagnetic?
Options
- A[ Ni ( CN )₄ ]²⁻
- B[ Co ( F ₆ ) ]³⁻
- C[ NiCl ₄ ]²⁻
- D[ Fe ( CN )₆ ]³⁻
Correct answer
A. [ Ni ( CN )₄ ]²⁻
Step-by-step solution
In [ Ni ( CN )₄ ]²⁻ CN ⁻ is strong field ligand and causes pairing of electrons. aligned & Ni ²⁺=3 d^8 & [ Ni ( CN )₄ ]²⁻ aligned As, all the electrons are paired, hence, it is diamagnetic.