1.
How many of the statement(s) are correct?
(i) The nucleophile makes a rear attack in S2 reaction and expels the leaving group from front side.
(ii) CHOCHCH adds to HBr according to Anti-Markownikoff's rule.
(iii) The basicity of halides decreases in the order F > Cl > Br > I, but the nucleophilicity is reverse of it (in polar protic solvents).
(iv) The rate of S2 reaction is independent of the polarity of the solvent.
(v) Sigma complex or arenium ion is resonance stabilised.
(i) The nucleophile makes a rear attack in S2 reaction and expels the leaving group from front side.
(ii) CHOCHCH adds to HBr according to Anti-Markownikoff's rule.
(iii) The basicity of halides decreases in the order F > Cl > Br > I, but the nucleophilicity is reverse of it (in polar protic solvents).
(iv) The rate of S2 reaction is independent of the polarity of the solvent.
(v) Sigma complex or arenium ion is resonance stabilised.
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