What is the geometry of [Ni(CN)4]²⁻?
ASquare planar
BTrigonal planar
COctahedral
DTetrahedral
Answer & Solution
Correct answer: A. Square planar
CN = 4 with strong-field ligand (CN⁻) and Ni²⁺ (d⁸): typically dsp² hybridization → square planar. (Compare with [NiCl4]²⁻ which is tetrahedral with weaker-field Cl⁻.)
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