JEE Main · 2024 · 04 Apr 2024 · Shift 1 · General Organic Chemistry

Which among the following is incorrect statement?

(A)Electromeric effect dominates over inductive effect
(B)The electromeric effect is, temporary effect
(C)The organic compound shows electromeric effect in the presence of the reagent only
(D)Hydrogen ion $(H^{+})$ shows negative electromeric effect✓ Correct

Answer: (D)

Solution

The electromeric effect is a temporary, complete transfer of a

π

-electron pair that occurs only in the presence of an attacking reagent, and it overrides the inductive effect — so statements A, B and C are correct.

H^{+}

is electron-deficient and accepts the

π

-electron pair, i.e. it shows a positive electromeric (

+

E) effect, not a negative one. Statement D is the incorrect one

\Rightarrow

option D.

JEE Main · 2024 · 04 Apr 2024 · Shift 1 · Single correct option

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