Coordination Compounds

Given below are 4 statements. Two of these are correct statements. Identify them.

A. \(\mathrm{Co}^{2+}\) is easily oxidised to \(\mathrm{Co}^{3+}\) in the presence of a strong ligand like \(\mathrm{CN}^{-}\)

B. \([\mathrm{Fe}(\mathrm{CN})_6]^{4-}\) is an octahedral complex ion which is paramagnetic in nature.

C. Removal of \(\mathrm{H}_2 \mathrm{O}\) molecules from \([\mathrm{Ti}(\mathrm{H}_2 \mathrm{O})_6] \mathrm{Cl}_3\) on strong heating converts it to a colourless compound.

D. Crystal Field splitting in Octahedral and Tetrahedral complexes is given by the equation \(\Delta_0=4 / 9 \Delta_t\)