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CHXII09:COORDINATION COMPOUNDS

322285 Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: \(\mathrm{Zn}=30, \mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Ni}\) \(=28\) )

1 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

2 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

3 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

CHXII09:COORDINATION COMPOUNDS

322286 Select the option with correct property

1 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) diamagnetic, \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) paramagnetic

2 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both diamagnetic

3 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both paramagnetic

4 \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) diamagnetic, \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) paramagnetic

JEE Main - 2024

CHXII09:COORDINATION COMPOUNDS

322287 Which of the following is true about the complex \(\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)\left(\mathrm{OH}_{2}\right)\right]\) ? [Atomic number of \(\mathrm{Pt}=\) 78]
(i) It will have two geometrical isomeric forms, cis and trans
(ii) The hybridisation state of \(\mathrm{Pt}(\mathrm{II})\) is \(\mathrm{sp}^{3}\)
(iii) It is a square planar complex
(iv) It is a diamagnetic complex
(v) It can show hydrate isomerism
(vi) It is a tetrahedral complex

1 (i), (iii), (iv)

2 (ii), (iv), (v)

3 (ii), (v), (vi)

4 (i), (v), (vi)

CHXII09:COORDINATION COMPOUNDS

322288 A magnetic moment of 1.73 B.M. will be shown by one among the following:

1 \(\left[\mathrm{CoCl}_{6}\right]^{4-}\)

2 \(\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)

3 \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)

4 \(\mathrm{TiCl}_{4}\)

CHXII09:COORDINATION COMPOUNDS

322289 Among the following complexes ( \(\mathrm{K}\) to \(\mathrm{P}\) ), \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right](\mathrm{K}),\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}(\mathrm{~L})\), \(\mathrm{Na}_{3}\left[\mathrm{Co}(\text { oxalate })_{3}\right](\mathrm{M}),\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}(\mathrm{~N})\), \(\mathrm{K}_{2}\left[\mathrm{Pt}(\mathrm{CN})_{4}\right](\mathrm{O})\), and \(\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{P})\), the diamagnetic complexes are:

1 K, L, M, N

2 K, M, O, P

3 L, M, O, P

4 L, M, N, O

Explanation:

\([\mathrm{K}]: {{\text{K}}_{\text{3}}}\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right] : \mathrm{Fe}^{3+}\) has \({\text{3}}{{\text{d}}^{\text{5}}}\) configuration; \(\mathrm{CN}^{-}\)is strong field ligand and thus four electrons are paired leaving one unpaired electron with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and thus paramagnetic.
[L]: \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}: \mathrm{Co}^{3+}\) has configuration; \(\mathrm{NH}_{3}\) is strong field ligand thus all six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
\([\mathrm{M}]: \mathrm{Na}_{3}\left[\mathrm{Co}(\mathrm{ox})_{3}\right]: \mathrm{Co}^{3+}\) configuration; \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\) is strong field ligand and thus all the six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
[N]: \(\quad\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}: \mathrm{Ni}^{2+}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) configuration with two unpaired electrons. \(\mathrm{H}_{2} \mathrm{O}\) is weak field ligand and thus \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridisation and paramagnetic.
[O]: \({{\text{K}}_{\text{2}}}\left[ {{\text{Pt(CN}}{{\text{)}}_{\text{4}}}} \right]\). \({\text{;}}{{\text{P}}^{{\text{2 + }}}}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) Configuration. \({\text{C}}{{\text{N}}^{\text{ - }}}\) is strong ligand and thus all the eight electrons are paired with \({\text{ds}}{{\text{p}}^{\text{3}}}\) hybridiastion and therefore diamagnetic .
\({\text{[P]:}}\left[ {{\text{Zn}}{{\left( {{{\text{H}}_{\text{2}}}{\text{O}}} \right)}_{\text{6}}}{{\left( {{\text{N}}{{\text{O}}_{\text{3}}}} \right)}_{\text{2}}}{\text{:Z}}{{\text{n}}^{{\text{2 + }}}}} \right.\) has \({\text{3}}{{\text{d}}^{{\text{10}}}}\) Configuration and thus all paired showing \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hubridisation and so diamagnetic.

CHXII09:COORDINATION COMPOUNDS

322285 Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: \(\mathrm{Zn}=30, \mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Ni}\) \(=28\) )

1 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

2 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

3 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

CHXII09:COORDINATION COMPOUNDS

322286 Select the option with correct property

1 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) diamagnetic, \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) paramagnetic

2 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both diamagnetic

3 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both paramagnetic

4 \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) diamagnetic, \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) paramagnetic

JEE Main - 2024

CHXII09:COORDINATION COMPOUNDS

322287 Which of the following is true about the complex \(\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)\left(\mathrm{OH}_{2}\right)\right]\) ? [Atomic number of \(\mathrm{Pt}=\) 78]
(i) It will have two geometrical isomeric forms, cis and trans
(ii) The hybridisation state of \(\mathrm{Pt}(\mathrm{II})\) is \(\mathrm{sp}^{3}\)
(iii) It is a square planar complex
(iv) It is a diamagnetic complex
(v) It can show hydrate isomerism
(vi) It is a tetrahedral complex

1 (i), (iii), (iv)

2 (ii), (iv), (v)

3 (ii), (v), (vi)

4 (i), (v), (vi)

CHXII09:COORDINATION COMPOUNDS

322288 A magnetic moment of 1.73 B.M. will be shown by one among the following:

1 \(\left[\mathrm{CoCl}_{6}\right]^{4-}\)

2 \(\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)

3 \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)

4 \(\mathrm{TiCl}_{4}\)

CHXII09:COORDINATION COMPOUNDS

322289 Among the following complexes ( \(\mathrm{K}\) to \(\mathrm{P}\) ), \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right](\mathrm{K}),\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}(\mathrm{~L})\), \(\mathrm{Na}_{3}\left[\mathrm{Co}(\text { oxalate })_{3}\right](\mathrm{M}),\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}(\mathrm{~N})\), \(\mathrm{K}_{2}\left[\mathrm{Pt}(\mathrm{CN})_{4}\right](\mathrm{O})\), and \(\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{P})\), the diamagnetic complexes are:

1 K, L, M, N

2 K, M, O, P

3 L, M, O, P

4 L, M, N, O

Explanation:

\([\mathrm{K}]: {{\text{K}}_{\text{3}}}\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right] : \mathrm{Fe}^{3+}\) has \({\text{3}}{{\text{d}}^{\text{5}}}\) configuration; \(\mathrm{CN}^{-}\)is strong field ligand and thus four electrons are paired leaving one unpaired electron with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and thus paramagnetic.
[L]: \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}: \mathrm{Co}^{3+}\) has configuration; \(\mathrm{NH}_{3}\) is strong field ligand thus all six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
\([\mathrm{M}]: \mathrm{Na}_{3}\left[\mathrm{Co}(\mathrm{ox})_{3}\right]: \mathrm{Co}^{3+}\) configuration; \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\) is strong field ligand and thus all the six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
[N]: \(\quad\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}: \mathrm{Ni}^{2+}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) configuration with two unpaired electrons. \(\mathrm{H}_{2} \mathrm{O}\) is weak field ligand and thus \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridisation and paramagnetic.
[O]: \({{\text{K}}_{\text{2}}}\left[ {{\text{Pt(CN}}{{\text{)}}_{\text{4}}}} \right]\). \({\text{;}}{{\text{P}}^{{\text{2 + }}}}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) Configuration. \({\text{C}}{{\text{N}}^{\text{ - }}}\) is strong ligand and thus all the eight electrons are paired with \({\text{ds}}{{\text{p}}^{\text{3}}}\) hybridiastion and therefore diamagnetic .
\({\text{[P]:}}\left[ {{\text{Zn}}{{\left( {{{\text{H}}_{\text{2}}}{\text{O}}} \right)}_{\text{6}}}{{\left( {{\text{N}}{{\text{O}}_{\text{3}}}} \right)}_{\text{2}}}{\text{:Z}}{{\text{n}}^{{\text{2 + }}}}} \right.\) has \({\text{3}}{{\text{d}}^{{\text{10}}}}\) Configuration and thus all paired showing \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hubridisation and so diamagnetic.

CHXII09:COORDINATION COMPOUNDS

322285 Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: \(\mathrm{Zn}=30, \mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Ni}\) \(=28\) )

1 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

2 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

3 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

CHXII09:COORDINATION COMPOUNDS

322286 Select the option with correct property

1 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) diamagnetic, \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) paramagnetic

2 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both diamagnetic

3 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both paramagnetic

4 \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) diamagnetic, \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) paramagnetic

JEE Main - 2024

CHXII09:COORDINATION COMPOUNDS

322287 Which of the following is true about the complex \(\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)\left(\mathrm{OH}_{2}\right)\right]\) ? [Atomic number of \(\mathrm{Pt}=\) 78]
(i) It will have two geometrical isomeric forms, cis and trans
(ii) The hybridisation state of \(\mathrm{Pt}(\mathrm{II})\) is \(\mathrm{sp}^{3}\)
(iii) It is a square planar complex
(iv) It is a diamagnetic complex
(v) It can show hydrate isomerism
(vi) It is a tetrahedral complex

1 (i), (iii), (iv)

2 (ii), (iv), (v)

3 (ii), (v), (vi)

4 (i), (v), (vi)

CHXII09:COORDINATION COMPOUNDS

322288 A magnetic moment of 1.73 B.M. will be shown by one among the following:

1 \(\left[\mathrm{CoCl}_{6}\right]^{4-}\)

2 \(\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)

3 \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)

4 \(\mathrm{TiCl}_{4}\)

CHXII09:COORDINATION COMPOUNDS

322289 Among the following complexes ( \(\mathrm{K}\) to \(\mathrm{P}\) ), \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right](\mathrm{K}),\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}(\mathrm{~L})\), \(\mathrm{Na}_{3}\left[\mathrm{Co}(\text { oxalate })_{3}\right](\mathrm{M}),\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}(\mathrm{~N})\), \(\mathrm{K}_{2}\left[\mathrm{Pt}(\mathrm{CN})_{4}\right](\mathrm{O})\), and \(\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{P})\), the diamagnetic complexes are:

1 K, L, M, N

2 K, M, O, P

3 L, M, O, P

4 L, M, N, O

Explanation:

\([\mathrm{K}]: {{\text{K}}_{\text{3}}}\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right] : \mathrm{Fe}^{3+}\) has \({\text{3}}{{\text{d}}^{\text{5}}}\) configuration; \(\mathrm{CN}^{-}\)is strong field ligand and thus four electrons are paired leaving one unpaired electron with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and thus paramagnetic.
[L]: \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}: \mathrm{Co}^{3+}\) has configuration; \(\mathrm{NH}_{3}\) is strong field ligand thus all six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
\([\mathrm{M}]: \mathrm{Na}_{3}\left[\mathrm{Co}(\mathrm{ox})_{3}\right]: \mathrm{Co}^{3+}\) configuration; \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\) is strong field ligand and thus all the six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
[N]: \(\quad\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}: \mathrm{Ni}^{2+}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) configuration with two unpaired electrons. \(\mathrm{H}_{2} \mathrm{O}\) is weak field ligand and thus \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridisation and paramagnetic.
[O]: \({{\text{K}}_{\text{2}}}\left[ {{\text{Pt(CN}}{{\text{)}}_{\text{4}}}} \right]\). \({\text{;}}{{\text{P}}^{{\text{2 + }}}}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) Configuration. \({\text{C}}{{\text{N}}^{\text{ - }}}\) is strong ligand and thus all the eight electrons are paired with \({\text{ds}}{{\text{p}}^{\text{3}}}\) hybridiastion and therefore diamagnetic .
\({\text{[P]:}}\left[ {{\text{Zn}}{{\left( {{{\text{H}}_{\text{2}}}{\text{O}}} \right)}_{\text{6}}}{{\left( {{\text{N}}{{\text{O}}_{\text{3}}}} \right)}_{\text{2}}}{\text{:Z}}{{\text{n}}^{{\text{2 + }}}}} \right.\) has \({\text{3}}{{\text{d}}^{{\text{10}}}}\) Configuration and thus all paired showing \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hubridisation and so diamagnetic.

CHXII09:COORDINATION COMPOUNDS

322285 Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: \(\mathrm{Zn}=30, \mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Ni}\) \(=28\) )

1 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

2 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

3 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

CHXII09:COORDINATION COMPOUNDS

322286 Select the option with correct property

1 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) diamagnetic, \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) paramagnetic

2 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both diamagnetic

3 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both paramagnetic

4 \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) diamagnetic, \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) paramagnetic

JEE Main - 2024

CHXII09:COORDINATION COMPOUNDS

322287 Which of the following is true about the complex \(\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)\left(\mathrm{OH}_{2}\right)\right]\) ? [Atomic number of \(\mathrm{Pt}=\) 78]
(i) It will have two geometrical isomeric forms, cis and trans
(ii) The hybridisation state of \(\mathrm{Pt}(\mathrm{II})\) is \(\mathrm{sp}^{3}\)
(iii) It is a square planar complex
(iv) It is a diamagnetic complex
(v) It can show hydrate isomerism
(vi) It is a tetrahedral complex

1 (i), (iii), (iv)

2 (ii), (iv), (v)

3 (ii), (v), (vi)

4 (i), (v), (vi)

CHXII09:COORDINATION COMPOUNDS

322288 A magnetic moment of 1.73 B.M. will be shown by one among the following:

1 \(\left[\mathrm{CoCl}_{6}\right]^{4-}\)

2 \(\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)

3 \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)

4 \(\mathrm{TiCl}_{4}\)

CHXII09:COORDINATION COMPOUNDS

322289 Among the following complexes ( \(\mathrm{K}\) to \(\mathrm{P}\) ), \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right](\mathrm{K}),\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}(\mathrm{~L})\), \(\mathrm{Na}_{3}\left[\mathrm{Co}(\text { oxalate })_{3}\right](\mathrm{M}),\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}(\mathrm{~N})\), \(\mathrm{K}_{2}\left[\mathrm{Pt}(\mathrm{CN})_{4}\right](\mathrm{O})\), and \(\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{P})\), the diamagnetic complexes are:

1 K, L, M, N

2 K, M, O, P

3 L, M, O, P

4 L, M, N, O

Explanation:

\([\mathrm{K}]: {{\text{K}}_{\text{3}}}\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right] : \mathrm{Fe}^{3+}\) has \({\text{3}}{{\text{d}}^{\text{5}}}\) configuration; \(\mathrm{CN}^{-}\)is strong field ligand and thus four electrons are paired leaving one unpaired electron with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and thus paramagnetic.
[L]: \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}: \mathrm{Co}^{3+}\) has configuration; \(\mathrm{NH}_{3}\) is strong field ligand thus all six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
\([\mathrm{M}]: \mathrm{Na}_{3}\left[\mathrm{Co}(\mathrm{ox})_{3}\right]: \mathrm{Co}^{3+}\) configuration; \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\) is strong field ligand and thus all the six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
[N]: \(\quad\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}: \mathrm{Ni}^{2+}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) configuration with two unpaired electrons. \(\mathrm{H}_{2} \mathrm{O}\) is weak field ligand and thus \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridisation and paramagnetic.
[O]: \({{\text{K}}_{\text{2}}}\left[ {{\text{Pt(CN}}{{\text{)}}_{\text{4}}}} \right]\). \({\text{;}}{{\text{P}}^{{\text{2 + }}}}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) Configuration. \({\text{C}}{{\text{N}}^{\text{ - }}}\) is strong ligand and thus all the eight electrons are paired with \({\text{ds}}{{\text{p}}^{\text{3}}}\) hybridiastion and therefore diamagnetic .
\({\text{[P]:}}\left[ {{\text{Zn}}{{\left( {{{\text{H}}_{\text{2}}}{\text{O}}} \right)}_{\text{6}}}{{\left( {{\text{N}}{{\text{O}}_{\text{3}}}} \right)}_{\text{2}}}{\text{:Z}}{{\text{n}}^{{\text{2 + }}}}} \right.\) has \({\text{3}}{{\text{d}}^{{\text{10}}}}\) Configuration and thus all paired showing \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hubridisation and so diamagnetic.

CHXII09:COORDINATION COMPOUNDS

322285 Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (Atomic number: \(\mathrm{Zn}=30, \mathrm{Cr}=24, \mathrm{Co}=27, \mathrm{Ni}\) \(=28\) )

1 \(\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

2 \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

3 \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)

4 \(\left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\)

CHXII09:COORDINATION COMPOUNDS

322286 Select the option with correct property

1 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) diamagnetic, \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) paramagnetic

2 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both diamagnetic

3 \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) and \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) both paramagnetic

4 \({\mathrm{\left[\mathrm{NiCl}_{4}\right]^{2-}}}\) diamagnetic, \({\mathrm{\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]}}\) paramagnetic

JEE Main - 2024

CHXII09:COORDINATION COMPOUNDS

322287 Which of the following is true about the complex \(\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)\left(\mathrm{OH}_{2}\right)\right]\) ? [Atomic number of \(\mathrm{Pt}=\) 78]
(i) It will have two geometrical isomeric forms, cis and trans
(ii) The hybridisation state of \(\mathrm{Pt}(\mathrm{II})\) is \(\mathrm{sp}^{3}\)
(iii) It is a square planar complex
(iv) It is a diamagnetic complex
(v) It can show hydrate isomerism
(vi) It is a tetrahedral complex

1 (i), (iii), (iv)

2 (ii), (iv), (v)

3 (ii), (v), (vi)

4 (i), (v), (vi)

CHXII09:COORDINATION COMPOUNDS

322288 A magnetic moment of 1.73 B.M. will be shown by one among the following:

1 \(\left[\mathrm{CoCl}_{6}\right]^{4-}\)

2 \(\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\)

3 \(\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}\)

4 \(\mathrm{TiCl}_{4}\)

CHXII09:COORDINATION COMPOUNDS

322289 Among the following complexes ( \(\mathrm{K}\) to \(\mathrm{P}\) ), \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right](\mathrm{K}),\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}(\mathrm{~L})\), \(\mathrm{Na}_{3}\left[\mathrm{Co}(\text { oxalate })_{3}\right](\mathrm{M}),\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}(\mathrm{~N})\), \(\mathrm{K}_{2}\left[\mathrm{Pt}(\mathrm{CN})_{4}\right](\mathrm{O})\), and \(\left[\mathrm{Zn}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\left(\mathrm{NO}_{3}\right)_{2}(\mathrm{P})\), the diamagnetic complexes are:

1 K, L, M, N

2 K, M, O, P

3 L, M, O, P

4 L, M, N, O

Explanation:

\([\mathrm{K}]: {{\text{K}}_{\text{3}}}\left[ {{\text{Fe(CN}}{{\text{)}}_{\text{6}}}} \right] : \mathrm{Fe}^{3+}\) has \({\text{3}}{{\text{d}}^{\text{5}}}\) configuration; \(\mathrm{CN}^{-}\)is strong field ligand and thus four electrons are paired leaving one unpaired electron with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and thus paramagnetic.
[L]: \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{3}: \mathrm{Co}^{3+}\) has configuration; \(\mathrm{NH}_{3}\) is strong field ligand thus all six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
\([\mathrm{M}]: \mathrm{Na}_{3}\left[\mathrm{Co}(\mathrm{ox})_{3}\right]: \mathrm{Co}^{3+}\) configuration; \(\mathrm{C}_{2} \mathrm{O}_{4}^{2-}\) is strong field ligand and thus all the six electrons are paired with \({{\text{d}}^{\text{2}}}{\text{s}}{{\text{p}}^{\text{3}}}\) hybridisation and therefore diamagnetic.
[N]: \(\quad\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{2}: \mathrm{Ni}^{2+}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) configuration with two unpaired electrons. \(\mathrm{H}_{2} \mathrm{O}\) is weak field ligand and thus \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridisation and paramagnetic.
[O]: \({{\text{K}}_{\text{2}}}\left[ {{\text{Pt(CN}}{{\text{)}}_{\text{4}}}} \right]\). \({\text{;}}{{\text{P}}^{{\text{2 + }}}}\) has \({\text{3}}{{\text{d}}^{\text{8}}}\) Configuration. \({\text{C}}{{\text{N}}^{\text{ - }}}\) is strong ligand and thus all the eight electrons are paired with \({\text{ds}}{{\text{p}}^{\text{3}}}\) hybridiastion and therefore diamagnetic .
\({\text{[P]:}}\left[ {{\text{Zn}}{{\left( {{{\text{H}}_{\text{2}}}{\text{O}}} \right)}_{\text{6}}}{{\left( {{\text{N}}{{\text{O}}_{\text{3}}}} \right)}_{\text{2}}}{\text{:Z}}{{\text{n}}^{{\text{2 + }}}}} \right.\) has \({\text{3}}{{\text{d}}^{{\text{10}}}}\) Configuration and thus all paired showing \({\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hubridisation and so diamagnetic.

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