Question

In a molecule, when displacement of electron pair is away from the group it is ______________ electromeric effect.

(a) zero

(b) negative

(c) positive

(d) no

I had been asked this question by my school principal while I was bunking the class.

Enquiry is from Fundamental Concepts in Organic Reaction Mechanism in section Organic Chemistry – Basic Principles and Technique of Chemistry – Class 11

Answer 1

The correct option is (c) positive

To explain: Electromeric effect is defined as the polarity produced in a multiple bonded compounds as a reagent approaches it in the presence of attacking agent, the 2 π electrons are completely transferred to any one of them and this effect is temporary. It is positive electromeric effect to when the displacement of electron pair is away from the atom or group and vice versa.