Question

Select the correct statement
i) Delocalisation of $\sigma$-electrons is hyperconjugation
ii) Delocalisation of $\pi$ and n electrons is resonance
iii) Partial displacement of $\sigma$-electrons is inductive effect

• A. i and ii
• B. i and iii
• C. ii and iii
• D. i, ii and iii

Answer 1

The correct option is A i and ii

In hyperconjugation, stability depends on the delocalization of $\sigma -$electrons whereas, in resonance, $\pi$ electrons, negative charge delocalization are important factors of stability.

In inductive effect, the polarity is induced in the compound due to the electronegativity difference between the atoms.

Thus only i and ii are correct.