Question

propin is more stable than ethen why ??

Answer 1

Due to hyperconjugation Propene is more stable than ethylene . Effects of hyperconjugation on the stability......?? Propene contains more carbon atoms with the comparison of ethylene , so Propene is more stable than ethylene

Answer 2

• The structure of propene is $H_3C-CH=CH_2$ and ethene is $CH_2=CH_2$.
• So, propene contains three alpha hydrogens that take part in hyperconjugation and give three hyper conjugative structures.
• Where ethene has no alpha hydrogen so, it can not take part in hyperconjugation. Thus number of hyper conjugative structure is zero.
• That's why ethene is less stable than propene.