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Q.
$\left[ Pt \left( NH _{3}\right)_{4}\right]\left[ CuCl _{4}\right]$ and $\left[ Cu \left( NH _{3}\right)_{4}\right]\left[ PtCl _{4}\right]$ are known as:
Coordination Compounds
Solution:
The ligands are interchanged in both the anionic and cationic entities of different metal ions present in a complex to form a coordination isomers.