Q. The anion [NiCl4]2− is paramagnetic but when CN− ions are added, the product [Ni(CN)4]2− is diamagnetic because in [NiCl4]2−, Cl− is a weak ligand and thus, electrons are unpaired in Ni2+ making it paramagnetic, sp3 hybridised and tetrahedral.
If true enter 1, else enter 0.