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Match List - I (Complexes) with List - II (Types). Choose the correct answer.
Column I
- A. $[Co(NH_3)_5NO_2]Cl_2$ and $[Co(NH_3)_5ONO]Cl_2$
- B. $[Cr(NH_3)_6][Co(CN)_6]$ and $[Cr(CN)_6][Co(NH_3)_6]$
- C. $[Co(NH_3)_5(SO_4)]Br$ and $[Co(NH_3)_5Br]SO_4$
- D. $[Cr(H_2O)_6]Cl_3$ and $[Cr(H_2O)_5Cl]Cl_2\cdot H_2O$
Column II
- I. ionisation isomerism
- II. coordination isomerism
- III. linkage isomerism
- IV. solvate isomerism
Correct answer: A → III, B → II, C → I, D → IV
Detailed Solution
(a) $NO_2^-$ vs $ONO^-$ bonding: linkage isomerism (ambidentate ligand). (b) Exchange of ligands between cationic and anionic coordination spheres: coordination isomerism. (c) Different ions formed on ionisation: ionisation isomerism. (d) Water present as ligand vs water of crystallisation: solvate (hydrate) isomerism.