Coordination Compounds 1 Question 4
####4. The one that will show optical activity is (en = ethane-1, 2-diamine) (a)
(c)
(b)
(d)
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Answer:
Correct Answer: 4. (a)
Solution:
- Optical activity is the ability of a chiral molecule to rotate the plane of polarised light, measured by a polarimeter. A chiral molecule does not have any plane of symmetry. If a molecule possess any plane of symmetry, then it is an achiral molecule. Given options (a), (b) and (d) possess plane of symmetry.
(b)
(d)
(a)
Only molecule (c) does not possess any plane of symmetry. Hence, it is a chiral molecule and shows optical activity.
