The transtion metals form complexes that involve central metal atom coordinated with ligands. The geometry of these complexes depends upon the number of ligands associated with the central metal atom. Hexacoordinate metal complexes normally perfer to have octahedral geometry.
From the following pair of oxides, indicate the number of d electrons of central metal atom. Also indicate which oxide will be coloriess and which will be colored. Explain your answer in brief.

Answer

(i) `Ti^(4+): 3d^(10)`; (ii) `Fe^(3+): 3d^(5)`