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Q.
$\left[ Fe \left( NO _{2}\right)_{3} Cl _{3}\right]$ and $\left[ Fe ( ONO )_{3} Cl _{3}\right]$ shows
Coordination Compounds
Solution:
$- NO _{2}$ is ambidentate ligand and can link through either nitrogen atom as $- NO _{2}$ or through oxygen atom as $-ONO$ and hence provides an example of linkage isomerism.