Which of the following statements are true with respect to electronic displacement in a covalent bond? (1) Inductive effect operates through pi bond. (2) Resonance effect operates through sigmabond. (3) Inductive effect operates through sigmabond. (4) Resonance effect operates through pi bond. (5) Resonance and inductive effects operate through sigma bond.

Which of the following statements are true with respect to electronic

1.	Which of the following statements are true with respect to electronic displacement in a covalent bond? (1) Inductive effect operates through pi bond. (2) Resonance effect operates through sigmabond. (3) Inductive effect operates through sigmabond. (4) Resonance effect operates through pi bond. (5) Resonance and inductive effects operate through sigma bond.
Answer» 3 and 4 1 and 2 2 and 4 1 and 3 Solution :The inductive effect is transmitted through` sigma ` bond and weakens as the distance between the SUBSTITUENTS and the reactive centre increases. But in resonance`pi` ELECTRONS shifting takes place giving permanent polarity onthe chain.