The crystal field theory assumes interaction between metal ion and the ligands as a purely electrostatic and ligands are supposed to be point charges.
Amongst the following complexes which has square planar geometry ?
a. [RhCl(CO)(PPh3)2]
b. K2[Cu(SCN)4]
c. K2[Ni(PH3)2Cl2]
d. MnO42−