CH3O−CH=CH−NO21CH2=CH−NO22CH2=CH−Cl3CH2=CH24
Which of the following is the correct order of bond length among these compounds?
1 > 2 > 3 > 4
4 > 3 > 2 > 1
1 > 3 > 2 > 4
2 > 3 > 1 > 4
e− withdrawing will decrease the double bond character