Valence Bond Theory
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CHXII09:COORDINATION COMPOUNDS

322333 A correct statement is

1 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is diamagnetic
2 \(\left[\mathrm{MnBr}_{4}\right]^{2-}\) is tetrahedral
3 \(\left[\mathrm{CoBr}_{2}(\mathrm{en})_{2}\right]^{-}\)exhibits linkage isomerism
4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is an inner orbital complex
CHXII09:COORDINATION COMPOUNDS

322334 Consider the following complex ions
\[\begin{array}{l}
{\rm{ P}} = {\left[ {{\rm{Fe}}{{\rm{F}}_6}} \right]^{3 - }}\\
{\rm{ Q}} = {\left[ {{\rm{V}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}\\
{\rm{ R}} = {\left[ {{\rm{Fe}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}
\end{array}\]
The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is

1 \({\mathrm{\mathrm{R} < \mathrm{P} < \mathrm{Q}}}\)
2 \({\mathrm{\mathrm{R} < \mathrm{Q} < \mathrm{P}}}\)
3 Q \({\mathrm{ < }}\) P \({\mathrm{ < \mathrm{R}}}\)
4 \({\mathrm{\mathrm{Q} < \mathrm{R} < \mathrm{P}}}\)
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS

322335 Which one of following is an outer orbital complex and exhibits paramagnetic behaviour?

1 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
2 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
3 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
4 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
CHXII09:COORDINATION COMPOUNDS

322336 Which of the following pairs will show the same magnetic moment (spin only)?

1 \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right]^{2+}\)
2 \(\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{4-}\) and \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)
3 \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\) and \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)
4 All of these
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CHXII09:COORDINATION COMPOUNDS

322333 A correct statement is

1 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is diamagnetic
2 \(\left[\mathrm{MnBr}_{4}\right]^{2-}\) is tetrahedral
3 \(\left[\mathrm{CoBr}_{2}(\mathrm{en})_{2}\right]^{-}\)exhibits linkage isomerism
4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is an inner orbital complex
CHXII09:COORDINATION COMPOUNDS

322334 Consider the following complex ions
\[\begin{array}{l}
{\rm{ P}} = {\left[ {{\rm{Fe}}{{\rm{F}}_6}} \right]^{3 - }}\\
{\rm{ Q}} = {\left[ {{\rm{V}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}\\
{\rm{ R}} = {\left[ {{\rm{Fe}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}
\end{array}\]
The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is

1 \({\mathrm{\mathrm{R} < \mathrm{P} < \mathrm{Q}}}\)
2 \({\mathrm{\mathrm{R} < \mathrm{Q} < \mathrm{P}}}\)
3 Q \({\mathrm{ < }}\) P \({\mathrm{ < \mathrm{R}}}\)
4 \({\mathrm{\mathrm{Q} < \mathrm{R} < \mathrm{P}}}\)
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS

322335 Which one of following is an outer orbital complex and exhibits paramagnetic behaviour?

1 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
2 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
3 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
4 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
CHXII09:COORDINATION COMPOUNDS

322336 Which of the following pairs will show the same magnetic moment (spin only)?

1 \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right]^{2+}\)
2 \(\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{4-}\) and \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)
3 \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\) and \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)
4 All of these
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CHXII09:COORDINATION COMPOUNDS

322333 A correct statement is

1 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is diamagnetic
2 \(\left[\mathrm{MnBr}_{4}\right]^{2-}\) is tetrahedral
3 \(\left[\mathrm{CoBr}_{2}(\mathrm{en})_{2}\right]^{-}\)exhibits linkage isomerism
4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is an inner orbital complex
CHXII09:COORDINATION COMPOUNDS

322334 Consider the following complex ions
\[\begin{array}{l}
{\rm{ P}} = {\left[ {{\rm{Fe}}{{\rm{F}}_6}} \right]^{3 - }}\\
{\rm{ Q}} = {\left[ {{\rm{V}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}\\
{\rm{ R}} = {\left[ {{\rm{Fe}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}
\end{array}\]
The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is

1 \({\mathrm{\mathrm{R} < \mathrm{P} < \mathrm{Q}}}\)
2 \({\mathrm{\mathrm{R} < \mathrm{Q} < \mathrm{P}}}\)
3 Q \({\mathrm{ < }}\) P \({\mathrm{ < \mathrm{R}}}\)
4 \({\mathrm{\mathrm{Q} < \mathrm{R} < \mathrm{P}}}\)
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS

322335 Which one of following is an outer orbital complex and exhibits paramagnetic behaviour?

1 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
2 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
3 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
4 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
CHXII09:COORDINATION COMPOUNDS

322336 Which of the following pairs will show the same magnetic moment (spin only)?

1 \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right]^{2+}\)
2 \(\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{4-}\) and \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)
3 \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\) and \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)
4 All of these
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CHXII09:COORDINATION COMPOUNDS

322333 A correct statement is

1 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is diamagnetic
2 \(\left[\mathrm{MnBr}_{4}\right]^{2-}\) is tetrahedral
3 \(\left[\mathrm{CoBr}_{2}(\mathrm{en})_{2}\right]^{-}\)exhibits linkage isomerism
4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) is an inner orbital complex
CHXII09:COORDINATION COMPOUNDS

322334 Consider the following complex ions
\[\begin{array}{l}
{\rm{ P}} = {\left[ {{\rm{Fe}}{{\rm{F}}_6}} \right]^{3 - }}\\
{\rm{ Q}} = {\left[ {{\rm{V}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}\\
{\rm{ R}} = {\left[ {{\rm{Fe}}{{\left( {{{\rm{H}}_2}{\rm{O}}} \right)}_6}} \right]^{2 + }}
\end{array}\]
The correct order of the complex ions, according to their spin only magnetic moment values (in B.M.) is

1 \({\mathrm{\mathrm{R} < \mathrm{P} < \mathrm{Q}}}\)
2 \({\mathrm{\mathrm{R} < \mathrm{Q} < \mathrm{P}}}\)
3 Q \({\mathrm{ < }}\) P \({\mathrm{ < \mathrm{R}}}\)
4 \({\mathrm{\mathrm{Q} < \mathrm{R} < \mathrm{P}}}\)
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS

322335 Which one of following is an outer orbital complex and exhibits paramagnetic behaviour?

1 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
2 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)
3 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
4 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
CHXII09:COORDINATION COMPOUNDS

322336 Which of the following pairs will show the same magnetic moment (spin only)?

1 \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) and \(\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{5} \mathrm{NO}\right]^{2+}\)
2 \(\left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{4-}\) and \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)
3 \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\) and \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)
4 All of these