The correct order of increasing field strength of ligands is:

1. ${\mathrm{SCN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{F}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{CN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{C}}_2{\mathrm{O}}_4^{2-}$

2. ${\mathrm{F}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{SCN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{C}}_2{\mathrm{O}}_4^{2-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{CN}}^{-}$

3. ${\mathrm{CN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{C}}_2{\mathrm{O}}_4^{2-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{SCN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{F}}^{-}$

4. ${\mathrm{SCN}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{F}}^{-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{C}}_2{\mathrm{O}}_4^{2-\hspace{0.17em}}<\hspace{0.17em}{\mathrm{CN}}^{-}$

What is 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?

1.  ${\mathrm{e}}^4$ ${\mathrm{t}}_2^2$

2.  ${\mathrm{t}}_{2\mathrm{g}}^{}$ $$ $4$ ${\mathrm{e}}_{\mathrm{g}}^2$

3.  ${\mathrm{t}}_{2\mathrm{g}}^{}$ $$ $6$ ${\mathrm{e}}_{\mathrm{g}}^0$

4.  ${\mathrm{e}}^3$ ${\mathrm{t}}_2^3$

The crystal field stabilization energy (CFSE) for [CoCl₆]^4– is 18000 cm^–1.
The CFSE for [CoCl₄]^2–  will be:

Identify the complex among the following that is not expected to exhibit isomerism:
 

1. [Pt(NH₃)₂Cl₂]

2. [Ni(NH₃)₂Cl₂]

3. [Ni(en)₃]²⁺

4. [Ni(NH₃)₄(H₂O)₂]²⁺

The carbonyl compound with the strongest C-O bond is:

1. Fe(CO)₅

2. [Mn(CO)₆]⁺

3. Cr(CO)₆

4. [V(CO)₆]^-

Among the given complex, the complex having the highest paramagnetic behaviour is:
(At. No. Ti = 22, Cr = 24, Co = 27, Zn = 30)

1. ${\left[\mathrm{Zn}{\left({\mathrm{NH}}_3\right)}_6\right]}^{2+}$

2. ${\left[\mathrm{Ti}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$

3. ${\left[\mathrm{Cr}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$

4. ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_6\right]}^{3+}$

Which one of the following pair represents stereoisomerism:

1. Linkage isomerism and Geometrical isomerism

2. Chain isomerism and Rotational isomerism

3. Optical isomerism and Geometrical isomerism

4. Structural isomerism and Geometrical isomerism

A complex compound is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with AgNO₃.$$
 What will its formula be? 

1. $\left[Co{\left(N{H}_3\right)}_{5}N{O}_3\right]C{l}_2$

2. $\left[Co{\left(N{H}_3\right)}_{5}Cl\right]N{O}_{3}Cl$

3. $\left[Co{\left(N{H}_3\right)}_{4}C{l}_2\right]N{O}_3$

4. $[Co{\left(N{H}_3\right)}_{4}ClN{O}_3]Cl$

The shape of Fe(CO)₅ is:

Which one of the following is expected to exhibit optical isomerism?
(en = ethylenediamine)

1. cis-[Pt(NH₃)₂Cl₂]  

2. cis-[Co(en)₂Cl₂]

3. trans−[Co(en)₂Cl₂]

4. trans−[Pt(NH₃)₂Cl₂]