Find stability order of the following alkenes:
(a) Cis-but-2-ene
(b) 2,3-Dimethylbut-2-ene
(c) 2-Methylbut-2-ene
(d) Propene
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The stability of alkenes increases as the number of alkyl substituents on the double-bonded carbons increases. This is due to the effects of hyperconjugation and inductive effects.