(a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave

(a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wavelength than 5000Å and one ligand which would form a complex absorbing light of wavelength higher than 5000 Å.
(b) Calculate the magnetic moments (spin only ) of the following complexes
`(i)[PtCl_(6)]^(2-) " " (ii) [Cr(CO)_(6)] " " (iii) [Ir(NH_(3))_(6)]^(3+)" " (iv) [Pd(en)_(2)]^(2+)`