What kind of isomerism is exhibited by octahedral [Co(NH3)4Br2]Cl:a)Geometrical and ionizationb)Geometrical and opticalc)Optical and ionizationd)Geometrical onlyCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

Geometrical and ionization isomerism is exhibited by octahedral [Co(NH3)4Br2]Cl.

Explanation:

Isomerism is the phenomenon in which two or more compounds have the same molecular formula but different arrangements of atoms. In coordination compounds, there are three types of isomerism:

1. Geometrical Isomerism: It arises due to the different possible arrangements of ligands around a central metal ion.

2. Optical Isomerism: It arises due to the presence of chiral ligands in a coordination compound.

3. Ionization Isomerism: It arises due to the different possible ways of distributing ligands between the cation and anion present in a coordination compound.

In the given complex, [Co(NH3)4Br2]Cl, there are two possible isomers:

1. Geometrical isomerism: The two bromine atoms can either be adjacent to each other in a cis-arrangement or opposite to each other in a trans-arrangement.

2. Ionization isomerism: The chloride ion can either be present in the cationic part or the anionic part of the complex.

Since both isomers are present in the given complex, it exhibits both geometrical and ionization isomerism.

Therefore, the correct option is 'A' - Geometrical and ionization.

Answer

Answer

Geometrical as cis and trans....and ionization by exchange of ligands within the coordination sphere with the ligands outside the coordination sphere

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