The hybridisation of [FeF₆]^3- is:

1. sp³d²
2. d²sp³
3. dsp³
4. sp³

Compound with the highest magnetic moment value is -

1. [Cr(H₂O)₆]³⁺       

2. [Fe(H₂O)₆]²⁺            

3. [Zn(H₂O)₆]²⁺

4. $[\mathrm{Ti}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$

The difference between a weak field ligand and a strong field ligand is:

The crystal field splitting energy is:

[Cr(NH₃)₆]³⁺ is paramagnetic ,while ${\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}$ is diamagnetic because:

The greater value of the stability constant of complex salt indicates   -

1. The greater proportion of products.

2. The greater proportion of reactants

3. Lesser concentration of catalyst at equilibrium

4 . All of the above

The correct order for the wavelengths of absorption in the visible region for the following is:

$$



\(\left[\mathrm{Ni}\left(\mathrm{NO}_2\right)_6\right]^{4-},\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+},\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
1. $[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$ < $[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6{]}^{2+}$ < $[\mathrm{Ni}{\left({\mathrm{NO}}_2\right)}_6{]}^{4-}$

2. $[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$ > $[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6{]}^{2+}$ > $[\mathrm{Ni}{\left({\mathrm{NO}}_2\right)}_6{]}^{4-}$

3. $[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6{]}^{2+}$ > $[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$ > $[\mathrm{Ni}{\left({\mathrm{NO}}_2\right)}_6{]}^{4-}$

4.  $[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$ > ${\left[\mathrm{Ni}{\left({\mathrm{NO}}_2\right)}_6\right]}^{4-}$ > [Ni(NH₃)₆]²⁺

The number of unpaired electrons in the following complexes respectively are-

${\mathrm{K}}_4\left[\mathrm{Mn}{\left(\mathrm{CN}\right)}_6\right], \mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}, {\mathrm{K}}_2\left[{\mathrm{MnCl}}_4\right]$

1. 1, 4, 5

2. 2, 4, 5

3. 0, 3, 4

4. 2, 3, 4

The correct splitting diagram of d orbitals in an octahedral crystal field is:

1.		2.
3.		4.	None of these.