Describe the structure and magnetic behaviour of `[Ni(CN)_4]^(2-)` ion on the basis of valence bond theory.

(a) Define a ligand . (b) Discuss the magnetic behaviour , nature and geometry of (NiCl_(4))^(2-) ion on the basis of valence bond theory (VBT)

Limitations Of Valence Bond Theory

Give an account of the valence bond theory . Explain the geometry and magnetic behaviour of the complex ion [Fe(CN)_(6)]^(4-) on the basis of the theory .

Discuss the geometry of the complex [Fe(CN)_6]^(3-) on the basis of valence bond theory.

(a) Write the IUPC names of the following co-ordination compounds (i) [Ce(NH_(3))_(4) (H_(2)O)_(2)]Cl_(3) (ii) [PtCl_(2)(NH_(3))_(4)] [PtCl_(4)] (b) State the hybridisation and magnetic property of [Fe(CN)_(6)]^(3-) ion according to the valence bond theory .