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# $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}{\mathrm{Cl}}_{2}\right]{\mathrm{NO}}_{2}$ and $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}\mathrm{Cl}\left({\mathrm{NO}}_{2}\right)\right]\mathrm{Cl}$ exhibit which type of isomerism?

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Solution

## Isomerism:Having the same chemical formula but different structural properties, Iwo or more compounds Isomerism is a process that produces formulas known as isomers.Ionization isomerism:Ionization isomerism refers to compounds that produce distinct ions in solution despite having the same chemical makeup. This type of isomerism occurs when the counter ion in a complex salt may displace a ligand, which can then turn into the counter ion, by becoming a potential ligand itself.Except for a ligand that has switched places with an anion or neutral molecule that was previously outside the coordination complex, ionization isomers are indistinguishable.Thus, $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}{\mathrm{Cl}}_{2}\right]{\mathrm{NO}}_{2}$ and $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}\mathrm{Cl}\left({\mathrm{NO}}_{2}\right)\right]\mathrm{Cl}$ are examples of ionization isomers. $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}{\mathrm{Cl}}_{2}\right]{\mathrm{NO}}_{2}$ and $\left[\mathrm{Co}{\left({\mathrm{NH}}_{3}\right)}_{4}\mathrm{Cl}\left({\mathrm{NO}}_{2}\right)\right]\mathrm{Cl}$ exhibit ionization isomerism.

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