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NEETChemistryCoordination Compounds

Which of the following coordination compounds is capable of exhibiting coordination isomerism?

Options

  1. A[ Co ( NH ₃)₅( NO ₂)] Cl ₂
  2. B[ Pt ( NH ₃)₄][ PdCl ₄]
  3. C[ Cr ( H ₂ O )₆] Cl ₃
  4. DK ₃[ Fe ( CN )₆]

Correct answer

B. [ Pt ( NH ₃)₄][ PdCl ₄]

Step-by-step solution

Coordination isomerism arises from the interchange of ligands between cationic and anionic entities of different metal ions present in a complex. Therefore, the compound must contain both a complex cation and a complex anion. Among the given options, only [ Pt ( NH ₃)₄][ PdCl ₄] consists of a complex cation [ Pt ( NH ₃)₄]²⁺ and a complex anion [ PdCl ₄]²⁻ . It can exhibit coordination isomerism (for example, forming [ Pd ( NH ₃)₄][ PtCl ₄] ). [ Co ( NH ₃)₅( NO ₂)] Cl ₂ contains an ambidentate ligand and exhibits li

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