From the following identify the groups that exhibit negative resonance (-R) effect when attached
to conjugated system
A. formyl
B . amino
C . alkoxy
D. cyano
E. nitro
1
A, C, E only
2
B, C, D only
3
A, D, E only
4
B, D, E only
From the following identify the groups that exhibit negative resonance (-R) effect when attached
to conjugated system
A. formyl
B . amino
C . alkoxy
D. cyano
E. nitro