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Only One Option Correct Type
Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q. Which type of isomerism is shown by [Co(NH3)4 Br2CI]? 
  • a)
    Geometrical and ionisation
  • b)
    Optical and ionisation
  • c)
    Geometrical and optical
  • d)
    Geometrical only
Correct answer is option 'A'. Can you explain this answer?
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Only One Option Correct TypeDirection (Q. Nos. 1-10) This section cont...
[Co(NH3)4Br2]CI can show both geometrical and ionisation isomerism.

[Co(NH3)4Br2]CI or [Co(NH3)4BrCI]Br
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Only One Option Correct TypeDirection (Q. Nos. 1-10) This section cont...
Understanding Isomerism in Coordination Compounds
Coordination compounds like [Co(NH3)4Br2Cl] can exhibit various types of isomerism due to their unique structures and ligands. Let's break down the types of isomerism relevant to this compound.
1. Geometrical Isomerism
- Definition: Geometrical isomerism occurs when ligands can be arranged in different spatial orientations around a central metal atom.
- Application: In [Co(NH3)4Br2Cl], the arrangement of the ligands (Br and Cl) around the cobalt can lead to different geometrical configurations, such as facial (fac) and meridional (mer) arrangements.
- Conclusion: This compound can exhibit geometrical isomers based on the relative positions of Br and Cl.
2. Ionisation Isomerism
- Definition: Ionisation isomerism arises when the compound can produce different ions in solution.
- Application: For [Co(NH3)4Br2Cl], one isomer could release Br- ions while another may release Cl- ions, leading to different ionic forms when dissolved in water.
- Conclusion: The presence of different ligands (Br and Cl) allows for the possibility of ionisation isomers, resulting in different ionic forms when the compound dissociates.
3. Optical Isomerism
- Note: While optical isomerism is not applicable in this case due to the lack of chiral centers, it is essential to recognize that geometrical isomers can also be optically active if they possess non-superimposable mirror images. However, this is not the primary type exhibited by [Co(NH3)4Br2Cl].
Final Conclusion
- Given that [Co(NH3)4Br2Cl] can show both geometrical and ionisation isomerism, the correct answer is option A: Geometrical and ionisation.
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Read the passage given below and answer the following questions:The existence of coordination compounds with the same formula but different arrangements of the ligands was crucial in the development of coordination chemistry. Two or more compounds with the same formula but different arrangements of the atoms are called isomers. Isomers are compounds with the same molecular formula but different structural formulas and do not necessarily share similar properties. There are many different classes of isomers, like stereoisomers, enantiomers, and geometrical isomers. There are two main forms of isomerism: structural isomerism and stereoisomerism. The different chemical formulas in structural isomers are caused either by a difference in what ligands are bonded to the central atoms or how the individual ligands are bonded to the central atoms.The following questions are multiple choice questions. Choose the most appropriate answer:Q. Due to the presence of ambidentate ligands, coordination compounds show isomerism. Palladium complexes of the type [Pd(C6H5)2(SCN)2] and [Pd(C6H5)2(NCS)2] are

Only One Option Correct TypeDirection (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which type of isomerism is shown by [Co(NH3)4 Br2CI]?a)Geometrical and ionisationb)Optical and ionisationc)Geometrical and opticald)Geometrical onlyCorrect answer is option 'A'. Can you explain this answer?
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