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Relative stabilities of various alkenes ...

Relative stabilities of various alkenes represented as `R_(2)C=CR_(2), R_(2)C=CHR,RCH=CHR` (trans), `RCH=CHR (cis)` are in the increasing order

A

`R_(2)C=CR_(2),R_(2)C=CHR,RCH=CHR(trans),RCH=CHR(cis)`

B

`R_(2)C=CR_(2),R_(2)C=CHR,RCH=CHR(cis), RCH=CHR(trans)`

C

`RCH=CHR(trans),RCH=CHR(cis), R_(2)C=CHR,R_(2)C=CR_(2)`

D

`RCH=CHR(cis),RCH=CHR(trans), R_(2)C=CHR, R_(2)C=CR_(2)`

Text Solution

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The correct Answer is:
D
Due to hyperconjugation, more substituted alkene is more stable. Due to steric hindrance, cis-isomer is less stable than trans-isomers. Thus, the correct is increasing order of stability is
`RCH=CHR (cis) lt RCH =CHR (trans) lt R_(2)C=CHR lt R_(2)C=CR_(2)`
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