propeso far we have concentrated on octahedral coplexes. The spitting of the d orbital energy level in two other types of complex tetrahedral and square-planar can also be accounted for satisfactorily by the crystal field theory. in fact, the splitting pattern for a tetrahedral ion is just the revrse of that for octahedral complex. in this case, the dddd are more closely directed at the ligand and therefore have more energy than the d and d most tetra are high-spin ,presumably, the tetra arrangement reduces magnetude of