Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMELEMENT OF SYMMETRYMedium2 minQB
ChemistryMediumsingle choice
Total number of plane of symmetry in all conformations of 1,2-dibromo of ethane
Options:
Answer:
A
Solution:
Ans. (A) 3.
Sol. Consider each conformation of BrCH2-CH2Br: the anti conformer has one plane of symmetry (the plane perpendicular bisecting the C-C bond through the C2 axis... the horizontal plane containing C, C and bisecting H/Br pairs); the gauche conformers have none; the fully eclipsed conformer (Br eclipsing Br) has two planes; the Br/H eclipsed conformers have none. Total = 1 + 2 = 3.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ELEMENT OF SYMMETRY
⏱ 2mℹ️ Source: QB
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