Chemistry - STEREO ISOMERISM Question with Solution | TestHub
Match the Column :
Column I | Column II |
|---|---|
(A) C2-axis of symmetry | (P) |
(B) C3-axis of symmetry | (Q) |
(C) Plane of symmetry | (R) |
(D) Centre of symmetry | (S) |
| (T) |
Options:
Answer:
Solution:
Ans. A P, Q, S, T; B P, R; C P, Q, R, S, T; D P.
P (hexagonal prism with centred faces) has C6/C3 and C2 axes, a plane of symmetry and a centre of symmetry, so it matches A, B, C and D. Q (heptagonal prism) has C2 axes and a plane of symmetry but no C3 axis and no centre of symmetry, so it matches A and C. R (the 1,3,5-trimethyl fused-ring structure) has a C3 axis and vertical planes of symmetry, so it matches B and C. S (the three-bladed exocyclic-alkene structure) has only a C2 axis and a plane of symmetry: A and C. T (tetracyclopentyl-dimethylcyclohexane) has a C2 axis and a vertical plane of symmetry: A and C. Hence A P,Q,S,T; B P,R; C P,Q,R,S,T; D P.
