NEETChemistryCoordination Compounds
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The coordination compounds [Co(NH₃)₅(SO₄)]Br and [Co(NH₃)₅Br]SO₄ exhibit ionization isomerism. Reason (R): Solvate isomerism arises when there is a difference in the number of solvent molecules directly bonded to the metal ion as ligands. In the light of the above statements, choose the most approp
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
Step-by-step solution
Assertion (A) is true because [Co(NH₃)₅(SO₄)]Br and [Co(NH₃)₅Br]SO₄ yield different ions in solution ( Br⁻ and SO₄²⁻ respectively). This interchange of a ligand and a counter ion is the defining feature of ionization isomerism. Reason (R) is also true as solvate (or hydrate) isomers differ in whether a solvent molecule is coordinated to the metal ion or present outside the coordination sphere in the crystal lattice. However, Reason (R) discusses solvate isomerism, which does not explain the ionization isomerism exh