The geometry and magnetic nature of the [Ni(CN)4]2- complex is: MCQ with Answer and Explanation

The geometry and magnetic nature of the [Ni(CN)4]2- complex is:
A. Tetrahedral, paramagnetic
B. Square planar, paramagnetic
C. Tetrahedral, diamagnetic
D. Square planar, diamagnetic
Answer: Option D
Solution (By JKExamLibrary)
In [Ni(CN)4]2-, Ni is in the +2 oxidation state (d8 configuration). CN- is a strong field ligand, causing the pairing of d-electrons. This leaves one empty d-orbital, leading to dsp2 hybridization. The geometry is square planar. Since all electrons are paired, the complex is diamagnetic.

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