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NEET CHEMISTRYCoordination CompoundsMedium

Question

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

A

[Pt(NH3)2Cl2][Pt(NH_3)_2Cl_2]

B

[Ni(NH3)2Cl2][Ni(NH_3)_2Cl_2]

C

[Ni(en)3]2+[Ni(en)_3]^{2+}

D

[Ni(NH3)4(H2O)2]2+[Ni(NH_3)_4(H_2O)_2]^{2+}

Step-by-Step Solution

  1. [Pt(NH3)2Cl2][Pt(NH_3)_2Cl_2] is a square planar complex of the type [MA2B2][MA_2B_2] and exhibits geometrical isomerism (cis and trans forms).
  2. [Ni(en)3]2+[Ni(en)_3]^{2+} is an octahedral complex containing bidentate ligands of the type [M(AA)3]n+[M(AA)_3]^{n+} and exhibits optical isomerism (dextro and laevo forms).
  3. [Ni(NH3)4(H2O)2]2+[Ni(NH_3)_4(H_2O)_2]^{2+} is an octahedral complex of the type [MA4B2][MA_4B_2] and exhibits geometrical isomerism (cis and trans forms).
  4. [Ni(NH3)2Cl2][Ni(NH_3)_2Cl_2] is a tetrahedral complex. Tetrahedral complexes do not show geometrical isomerism because the relative positions of the unidentate ligands attached to the central metal atom are the same with respect to each other. Furthermore, since all four ligands are not different, it also does not show optical isomerism. Therefore, it is not expected to exhibit isomerism.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Coordination Compounds. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYCoordination Compoundsidentifycomplexfollowingexpectedexhibit

More Coordination Compounds Questions

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The complex, $[\text{Pt}(\text{Py})(\text{NH}_3)\text{BrCl}]$ will have how many geometrical isomers?

A.4
B.0
C.2
D.3
MediumSolve

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

A.$[Zn(NH_3)_6]^{2+}$
B.$[Ti(NH_3)_6]^{3+}$
C.$[Cr(NH_3)_6]^{3+}$
D.$[Co(NH_3)_6]^{3+}$
MediumSolve

Mg is present in:

A.Chlorophyll
B.Haemoglobin
C.Vitamin-B12
D.Vitamin-B
EasySolve

The complexes $[\text{Co}(\text{NH}_3)_6][\text{Cr}(\text{CN})_6]$ and $[\text{Cr}(\text{NH}_3)_6][\text{Co}(\text{CN})_6]$ are examples of:

A.Ionisation isomerism
B.Coordination isomerism
C.Geometrical isomerism
D.Linkage isomerism
EasySolve

The coordination compound that gives the maximum number of isomers is:

A.$[Co(NH_3)_4Cl_2]$
B.$[Ni(en)(NH_3)_4]^{2+}$
C.$[Ni(C_2O_4)(en)_2]$
D.$[Cr(SCN)_2(NH_3)_4]^+$
HardSolve

$[Cu(NH_3)_4]^{2+}$ reacts with $HNO_3$ in excess of water and gives:

A.$Cu(OH)_2$
B.$Cu(NO_3)_2$
C.$[Cu(H_2O)_4]^{2+}$
D.None of the above
MediumSolve

CFSE (in the octahedral field) will be maximum in: (Atomic number Co = 27)

A.[Co(H₂O)₆]³⁺
B.[Co(NH₃)₆]³⁺
C.[Co(CN)₆]³⁻
D.[Co(C₂O₄)₃]³⁻
MediumSolve

The IUPAC name of the following complex is: $[Ag(H_2O)_2][Ag(CN)_2]$

A.Diaquasilver(I) dicyanidoargentate(I)
B.Dicyanidosilver(II) diaquaargentate(II)
C.Diaquasilver(II) dicyanidoargentate(II)
D.Dicyanidosilver(I) diaquaargentate(I)
EasySolve

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