Displacement of electron of a multiple bond towards the atom or away from the atom at the demand of reagent is called
Electromeric effect
indcutive effect
mesomeric effect
hypercojugation
As we have learned
Electromeric effect -
Displacement of electron in a multiple bonds towards the atom or away from the atom at the demand of reagent is called electromeric effect.
- wherein
It is a temporary effect which operates only at the demand of reagent
Definition of electromeric effect
Therefore, option (1) is correct.