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

The correct electronic configuration of the central atom in ${\mathrm{K}}_4\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]$  based on crystal field theory is:

Which among the following is a diamagnetic complex?

1. ${\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}$

2. ${\left[{\mathrm{CuCl}}_4\right]}^{2-}$

3. ${\left[{\mathrm{CoF}}_6\right]}^{3-}$

4. ${\left[{\mathrm{NiCl}}_4\right]}^{2-}$

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

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

An example of a sigma bonded organometallic compound is:

1. Ruthenocene                 

2. Grignard's reagent

3. Ferrocene                     

4. Cobaltocene

Of the following complex ions, the diamagnetic complex is:

1. [Ni(CN)₄]^2-                       

2. [CuCl₄]^2-

3. [CoF₆]^3-                           

4. [NiCl₄]^2-

The hybridisation of [FeF₆]^3- is:

1. sp³d²
2. d²sp³
3. dsp³
4. sp³

The electronic configuration that represents the maximum magnetic moment is:

1. $d^3$

2. $d^2$

3. $d^8$

4. $d^6$(high spin)

The low spin complex among the following is:

The hybridisation of Ni in the complex [Ni(CN)₄]^2- is:
(Atomic number of Ni = 28)

1. dsp²                               

2. sp³

3. d²sp²                             

4. d²sp³