NEET2026ChemistryChapterActual
Observe the different pairs of isomeric coordination compounds described in List I. Match List I with the correct type of structural isomerism they represent in List II. List I List II A [ Co ( NH₃ )₅( NO₂ )]²⁺ [ Co ( NH₃ )₅( ONO )]²⁺ 1 Ionization isomerism B [ Cr ( H₂O )₆] Cl₃ [ Cr ( H₂O )₅ Cl ] Cl₂ H₂O 2 Coordination isomerism C [ Co ( NH₃ )₅( SO₄ )] Br [ Co ( NH₃ )₅ Br ] SO₄ 3 Linkage isomerism D [ Pt ( NH₃ )₄][ C
Options
- AA-3, B-4, C-1, D-2
- BA-2, B-4, C-1, D-3
- CA-3, B-1, C-4, D-2
- DA-4, B-3, C-2, D-1
Correct answer
A. A-3, B-4, C-1, D-2
Step-by-step solution
In pair A, the ligand NO₂^- is an ambidentate ligand which can bind through either nitrogen or oxygen. This represents linkage isomerism. (A 3) In pair B, the complexes differ in the number of water molecules present as ligands inside the coordination sphere and as water of crystallization outside. This represents solvate (or hydrate) isomerism. (B 4) In pair C, the counter ion and a ligand exchange places, producing different ions in solution ( Br^- vs SO₄²⁻ ). This represents ionization isomerism. (C 1) In pair D