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Q.
Which of the following is the most stable alkene?
AFMCAFMC 2007
Solution:
We know that the greater number of alkyl groups attached to double bonded carbon atoms, more stable is the alkene. Therefore, most stable alkene is $R_{2} C = CR _{2}$
Order of stability of alkenes is
$CH _{2}= CH _{2} < R CH = CH _{2} $
$ < R CH = CH R < R_{2} C = CR _{2}$
