JEE Main · ChemistryMedium

Consider the complex ion . Which of the following statements regarding its isomerism is correct?

  1. A.It exhibits both geometrical and optical isomerism.
  2. B.Only the trans-isomer is optically active.
  3. C.It shows only geometrical isomerism but no optical isomerism.
  4. D.The cis-isomer is achiral due to a plane of symmetry.
Show correct answer & step-by-step solution

Correct answer: AIt exhibits both geometrical and optical isomerism.

Solution

  1. The complex exists in cis and trans geometrical forms.
  2. The trans-isomer has a plane of symmetry and is achiral.
  3. The cis-isomer lacks a plane of symmetry and exists as a pair of non-superimposable mirror images.
  4. Hence the complex exhibits both geometrical and optical isomerism.
  5. Hence the answer is (A).

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