3. (p) (a) Show the d-electron configuration of the Ret? Zr++ and Pd-metal ions in the case of octahedral complex with a strong field ligand. In which case do you expect a distortion? If so, what kind of distortion do you expect? (12p) (b) Compare bond order, bond length and stretching frequencies for CO and Cr-C bonds for the octahedral complexes (Cr(CO):(PBrs) and (Cr(CO)s(PCI)