Assertion: The trans-[CoCl2(en)2]+ is optically inactive.
Reason: It is symmetrical because it contains a plane of symmetry.
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.
If Assertion is CORRECT but Reason is INCORRECT.
If Assertion is INCORRECT but Reason is CORRECT.
If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.
Explanation:
The trans-[CoCl2(en)2]+ is optically inactive because it has a plane of symmetry.
The reason is correct. The trans-isomer of [CoCl2(en)2]+ is symmetrical and contains a plane of symmetry, making it optically inactive. In optical isomerism, the lack of symmetry (chiral center) is required, and a plane of symmetry in this case makes the complex achiral (optically inactive).
