Question
Explanation of ionization isomerism with example.
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Answer
Ionization isomerism: When the cation present in a complex is itself a possible ligand and it forms another complex by replacing a ligand, then the complex obtained is called ionization isomerism and this property is called ionization isomerism.
Example : (i) $\left[ Co \left( NH _3\right)_5 SO _4\right] Br$ and
(ii) $\left[ Co \left( NH _3\right)_5 Br \right] SO _4$
$Br ^{-}$is obtained by absorption of (i) whereas by ionization
(ii) $SO _4{ }^{2-}$ is obtained.
Example : (i) $\left[ Co \left( NH _3\right)_5 SO _4\right] Br$ and
(ii) $\left[ Co \left( NH _3\right)_5 Br \right] SO _4$
$Br ^{-}$is obtained by absorption of (i) whereas by ionization
(ii) $SO _4{ }^{2-}$ is obtained.
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