Which of the following statements are TRUE? (I) Inductive effect operates through the sigma bond (II) Resonance effect operates through the pi bond (III) Inductive effects operate through the pi bond (IV) Resonance effect operates through the sigma bond
A. (I) and (II)
Inductive effect involves the displacement of -electrons along a saturated carbon chain. Thus, it operates through -bonds. Resonance effect involves the delocalization of -electrons or lone pairs of electrons. Thus, it operates through -bonds. Therefore, statements (I) and (II) are true. Answer: (I) and (II)
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