Question

Explain the following :
(i) CO is stronger ligand than NH₃.
(ii) Low spin octahedral complexes of nickel are not known.
(iii)Aqueous solution of [Ti(H₂O)₆]⁺³ is coloured.

Answer 1

(i) CO has high value of crystal field splitting energy than Cl.
(ii) Ni has d⁸ conguration which does not affect by field strength of ligand.
(iii) In this case, Ti⁺³ has t_2g 1 e_g ⁰ configuration. It can perform d-d transition.