a) Give the electronic configuration of the d-orbitals of Ti in `[Ti(H_(2)O)_(6)]^(3+)` ion and explain why the complex is coloured? [At. No. Of Ti=22]
b) Write IUPAC name of `[Cr(NH_(3))_(3)(H_(2)O)_(3)]Cl_(3)`

Explanation

a) Oxidation state of Ti : `x+ 6(0) = +3`
configuration of `Ti^(3+)` ion = [Ar] `3d^(1)4s^(0)`.
Complex is coloured due to the presence of an unpaired electron leading d-d transition.
b) Triamminetriaquachromium (III) chloride