Question

The delocalization of electrons due to overlap between p-orbital and sigma bond is called.

• A. Inductive effect
• B. electronic effect
• C. hyperconjugation
• D. resonance

Hint:

Overlap of a sigma bond, usually C-H, with an adjacent p orbital delocalises electrons and is called hyperconjugation.

Answer 1

The Correct Option is C

Step 1: Match the definition
Delocalisation between a sigma bond and a p orbital matches only hyperconjugation.

Step 2: Why the other options fail
Inductive effect is permanent polarisation of sigma bonds. Resonance needs pi bond or lone pair overlap. 'Electronic effect' is a general term and does not describe this overlap.

Step 3: Final check
The sigma-p overlap effect is hyperconjugation, so the answer is option (C).

Final Answer:
Option (C), hyperconjugation, is correct. \[ \boxed{\text{(C) }\text{hyperconjugation}} \]