Question

The one that will show optical activity is: (en = ethane-1, 2-diamine)

Answer 1

Answer:

b is the right option here

Answer 2

The complex in option A wills how optical activity.

• Optical activity is shown by the complexes whose mirro image is not super-imposible on itself.
• The complexes that have identcal groups in any of the trans position in an octahedral complex possesses a plane of symmetry and hence, will have mirror images that are super-imposable on itself, making the complex optically inactive.
• All the three complexes in option B, C and D possesses a plane of symmetry hence are optically inactive while the complex in option A having no elements of symmetry is optically active.