(A) In the following complex ions, explain the type of hybridisation, shape and magnetic property: ( 2 1/2 × 2 = 5 ) (a) [ Fe ( H_2 O )_6]^2+ (b) […

In the following complex ions, explain the type of hybridisation, shape and magnetic property : $\displaystyle \left(\mathbf{2} \frac{\mathbf{1}}{\mathbf{2}} \times \mathbf{2}=\mathbf{5}\right)$

$\displaystyle \left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

$\displaystyle \left[\mathrm{NiCl}_{4}\right]^{2-}$ (At. Nos. : $\displaystyle \mathrm{Fe}=26, \mathrm{Ni}=28$ )

OR 32. (B) (a) Write IUPAC names of the following :

$\displaystyle \left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)(\mathrm{CN})(\mathrm{en})_{2}\right]^{2+}$

$\displaystyle \left[\mathrm{PtCl}_{4}\right]^{2-}$

$\displaystyle \left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}(\mathrm{ONO})\right]^{+}$

What is spectrochemical series ? Write the difference between a strong field ligand and a weak field ligand.