The geometry of paramagnetic nickel complex [NiCl₄]²⁻ is:
d⸠paramagnetic prefers tetrahedral.
tetrahedral
octahedral
square planar
distorted octahedral
The Ni²⁺ ion in [NiCl₄]²⁻ has a 3d⁸ electron configuration, resulting in paramagnetism and a preference for tetrahedral geometry. Square planar geometry is characteristically observed for diamagnetic d⁸ complexes.
The IUPAC name for the complex \( [\text{Co}(\text{ONO})(\text{NH}_3)_5]\text{Cl}_2 \) is