Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMELEMENT OF SYMMETRYMedium2 minQB
ChemistryMediumsingle choice
Trans 2-butene
(Molecular plane) or 
(Not possible)
Options:
Answer:
B
Solution:
trans-2-Butene has only one plane of symmetry: σxy, the molecular plane containing all the atoms. The perpendicular plane σyz is not a symmetry plane here, because reflecting across it would interchange a CH3 group with an H atom on the same carbon (CH3 is up-left and H down-left on C2, but H is up-right and CH3 down-right on C3). cis-2-Butene has both planes; trans-2-butene has only the molecular plane.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ELEMENT OF SYMMETRY
⏱ 2mℹ️ Source: QB
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