Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMELEMENT OF SYMMETRYEasy2 minQB
ChemistryEasymatching list
Match the Column :
Column I | Column II |
|---|---|
(A) | (P) Centre of symmetry |
(B) | (Q) C2-axis of symmetry |
(C) | (R) Plane of symmetry |
(D) | (S) Optically active |
| (T) C3-axis of symmetry |
Options:
Answer:
D
Solution:
Ans. A R, T; B Q, R; C P, Q, R; D S.
(A) NH3 (trigonal pyramidal, C3v) : a C3 axis through N and three vertical planes of symmetry - R and T. It has no centre of symmetry and is not optically active (rapid inversion). (B) H2O (bent, C2v) : a C2 axis through O and two planes of symmetry - Q and R. (C) trans-1,2-Dichloroethene (C2h) : a centre of symmetry at the midpoint of C=C, a C2 axis and the molecular plane - P, Q and R. (D) 2-Butanol has one stereocentre and no symmetry element, so a pure enantiomer is optically active - S.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ELEMENT OF SYMMETRY
⏱ 2mℹ️ Source: QB
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