consider the following complex ions pq and r p fef6 pow 3 q

Consider the following complex ions, $$P,Q$$ and $$R.$$
$$P = {\left[ {Fe{F_6}} \right]^{3 - }},Q = {\left[ {V{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }}{\text{and}}\,R = {\left[ {Fe{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }}$$
The correct order of the complex ions, according to their spin-only magnetic moment values $$\left( {{\text{in}}\,{\text{B}}{\text{.M}}.} \right)$$ is

A. $$R < Q < P$$

B. $$Q < R < P$$

C. $$R < P < Q$$

D. $$Q < P < R$$

Answer : $$Q < R < P$$

Solution :
The electronic configuration of central metal ion in complex ions $$P,Q\,{\text{and}}\,R$$ are
$$P = {\left[ {Fe{F_6}} \right]^{3 - }};F{e^{3 + }}:$$ Co-ordination Compounds mcq solution image

$$Q = {\left[ {V{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }};{V^{2 + }}$$ Co-ordination Compounds mcq solution image

$$R = {\left[ {Fe{{\left( {{H_2}O} \right)}_6}} \right]^{2 + }};F{e^{2 + }}$$ Co-ordination Compounds mcq solution image

Higher the no. of unpaired electron(s), higher will be magnetic moment. Thus the correct order of spin only magnetic moment is $$Q < R < P$$

Releted MCQ Question on
Inorganic Chemistry >> Co - ordination Compounds

Releted Question 1

Amongst $$Ni{\left( {CO} \right)_4},{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}{\text{and}}\,NiCl_4^{2 - }$$

A. $$Ni{\left( {CO} \right)_4}\,{\text{and}}\,NiCl_4^{2 - }$$ are diamagnetic and $${\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ is paramagnetic

B. $$NiCl_4^{2 - }\,{\text{and}}\,{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are diamagnetic and $$Ni{\left( {CO} \right)_4}$$ is paramagnetic

C. $$Ni{\left( {CO} \right)_4}\,{\text{and}}\,{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are diamagnetic and $$NiCl_4^{2 - }$$ is paramagnetic

D. $$Ni{\left( {CO} \right)_4}$$ is diamagnetic and $$NiCl_4^{2 - }\,{\text{and}}\,{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}$$ are paramagnetic

View Answer

Releted Question 2

The geometry of $$Ni{\left( {CO} \right)_4}\,{\text{and}}\,Ni{\left( {PP{h_3}} \right)_2}C{l_2}\,{\text{are}}$$

A. both square planar

B. tetrahedral and square planar, respectively

C. both tetrahedral

D. square planar and tetrahedral, respectively

View Answer

Releted Question 3

The complex ion which has no $$'d'$$ electron in the central metal atom is

A. $${\left[ {Mn{O_4}} \right]^ - }$$

B. $${\left[ {Co{{\left( {N{H_3}} \right)}_6}} \right]^{3 + }}$$

C. $${\left[ {Fe{{\left( {CN} \right)}_6}} \right]^{3 - }}$$

D. $${\left[ {Cr{{\left( {{H_2}O} \right)}_6}} \right]^{3 + }}$$

View Answer

Releted Question 4

In the process of extraction of gold,
Roasted gold ore $$ + C{N^ - } + {H_2}O\mathop \to \limits^{{O_2}} \left[ X \right] + O{H^ - }$$
$$\left[ X \right] + Zn \to \left[ Y \right] + Au$$
Identify the complexes $$\left[ X \right]\,\,{\text{and}}\,\,\left[ Y \right]$$

A. $$X = {\left[ {Au{{\left( {CN} \right)}_2}} \right]^ - },Y = {\left[ {Zn{{\left( {CN} \right)}_4}} \right]^{2 - }}$$

B. $$X = {\left[ {Au{{\left( {CN} \right)}_4}} \right]^{3 - }},Y = {\left[ {Zn{{\left( {CN} \right)}_4}} \right]^{2 - }}$$

C. $$X = {\left[ {Au{{\left( {CN} \right)}_2}} \right]^ - },Y = {\left[ {Zn{{\left( {CN} \right)}_6}} \right]^{4 - }}$$

D. $$X = {\left[ {Au{{\left( {CN} \right)}_4}} \right]^ - },Y = {\left[ {Zn{{\left( {CN} \right)}_4}} \right]^{2 - }}$$

View Answer

Releted MCQ Question on
Inorganic Chemistry >> Co - ordination Compounds

Amongst $$Ni{\left( {CO} \right)_4},{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}{\text{and}}\,NiCl_4^{2 - }$$

The geometry of $$Ni{\left( {CO} \right)_4}\,{\text{and}}\,Ni{\left( {PP{h_3}} \right)_2}C{l_2}\,{\text{are}}$$

The complex ion which has no $$'d'$$ electron in the central metal atom is

In the process of extraction of gold,
Roasted gold ore $$ + C{N^ - } + {H_2}O\mathop \to \limits^{{O_2}} \left[ X \right] + O{H^ - }$$
$$\left[ X \right] + Zn \to \left[ Y \right] + Au$$
Identify the complexes $$\left[ X \right]\,\,{\text{and}}\,\,\left[ Y \right]$$

Practice More Releted MCQ Question on
Co - ordination Compounds

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on Inorganic Chemistry >> Co - ordination Compounds

Amongst $$Ni{\left( {CO} \right)_4},{\left[ {Ni{{\left( {CN} \right)}_4}} \right]^{2 - }}{\text{and}}\,NiCl_4^{2 - }$$

The geometry of $$Ni{\left( {CO} \right)_4}\,{\text{and}}\,Ni{\left( {PP{h_3}} \right)_2}C{l_2}\,{\text{are}}$$

The complex ion which has no $$'d'$$ electron in the central metal atom is

In the process of extraction of gold, Roasted gold ore $$ + C{N^ - } + {H_2}O\mathop \to \limits^{{O_2}} \left[ X \right] + O{H^ - }$$ $$\left[ X \right] + Zn \to \left[ Y \right] + Au$$ Identify the complexes $$\left[ X \right]\,\,{\text{and}}\,\,\left[ Y \right]$$

Practice More Releted MCQ Question on Co - ordination Compounds

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Inorganic Chemistry >> Co - ordination Compounds

In the process of extraction of gold,
Roasted gold ore $$ + C{N^ - } + {H_2}O\mathop \to \limits^{{O_2}} \left[ X \right] + O{H^ - }$$
$$\left[ X \right] + Zn \to \left[ Y \right] + Au$$
Identify the complexes $$\left[ X \right]\,\,{\text{and}}\,\,\left[ Y \right]$$

Practice More Releted MCQ Question on
Co - ordination Compounds