Question

which one of the following has all the effects namely inductive, mesomeric and hyperconjugation? A)CH3Cl B)CH3CH=CH2 C) CH3CH=CHCOCH3 D) CH2=CH-CH=CH2

Answer 1

c becoz of carbonyl grp,double bond resonance alpha hydrogens are also present due to which hyperconjugation ocvurs

Answer 2

Answer:

Explanation:

first lets see hyperconjuagtion

for the hyperconjugation the system is alkene

so check bcd

d has no alpha hydrogens so it doesnot show hyperconjugation

now check mesomeric effect and inductive in b and c

lets check mesomeric effect first

for mesomeric effect

see lone pairs first

if you see in options

c has lone pairs

and b doesnot show any mesomeric effect

so c is the compound that is showing all effects