Consider the following statements I: Hyperconjugation helps in increasing…
Chemistry · JEE Main · NTA Exams — Hydrocarbons
Consider the following statements
I: Hyperconjugation helps in increasing electron-density at ortho and para-sites in case of alkyl groups.
II: Electron-donating groups are activators and ortho and para-directors because they stabilise the arenium cations.
III: Electron-withdrawing groups are activators and are meta-directors because they stabilise the arenium cations.
IV:Halogens are activators and ortho and para-directors.
Select correct statements
I: Hyperconjugation helps in increasing electron-density at ortho and para-sites in case of alkyl groups.
II: Electron-donating groups are activators and ortho and para-directors because they stabilise the arenium cations.
III: Electron-withdrawing groups are activators and are meta-directors because they stabilise the arenium cations.
IV:Halogens are activators and ortho and para-directors.
Select correct statements
- I, II
- I, II, III
- II, III, IV
- I, IV
Answer
(A) I, II
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