The magnetic moment of [NiX4]2- ion is found to be zero. Then the ion is :<br>(X = monodentate anion — Coordination Compounds Chemistry Question

💡 Solution & Explanation

Step 1: Ni^2+ has a 3d^8 configuration. Step 2: A magnetic moment of zero (diamagnetic) indicates that all 8 d-electrons are fully paired, which vacates one of the 3d orbitals. Step 3: The single empty 3d orbital, along with one 4s and two 4p orbitals, participate in hybridization to form four dsp^2 hybrid orbitals, giving a square planar geometry. This corresponds to option (c).