Question:
The complexes \([Co(NH_3)_5Br]SO_4\) and \([Co(NH_3)_5SO_4]Br\) are examples of
The complexes \([Co(NH_3)_5Br]SO_4\) and \([Co(NH_3)_5SO_4]Br\) are examples of
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If ions interchange between inside and outside coordination sphere, it is ionization isomerism.
Updated On: Apr 24, 2026
- Linkage isomerism
- Solvate isomerism
- Coordination isomerism
- Ionization isomerism
- Geometrical isomerism
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The Correct Option is D
Solution and Explanation
Concept:
Ionization isomerism occurs when counter ions and ligands interchange between coordination sphere and ionization sphere.
Step 1: Analyze complexes.
• \([Co(NH_3)_5Br]SO_4\) $\rightarrow$ \(Br^-\) inside, \(SO_4^{2-}\) outside
• \([Co(NH_3)_5SO_4]Br\) $\rightarrow$ \(SO_4^{2-}\) inside, \(Br^-\) outside
Step 2: Identify type of isomerism.
Exchange between ligand and counter ion $\rightarrow$ Ionization isomerism
Step 1: Analyze complexes.
• \([Co(NH_3)_5Br]SO_4\) $\rightarrow$ \(Br^-\) inside, \(SO_4^{2-}\) outside
• \([Co(NH_3)_5SO_4]Br\) $\rightarrow$ \(SO_4^{2-}\) inside, \(Br^-\) outside
Step 2: Identify type of isomerism.
Exchange between ligand and counter ion $\rightarrow$ Ionization isomerism
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