Question

Electromeric effect

• A. Comes into play at the demand of attacking reagent
• B. Involves displacement of electrons in a sigma bond
• C. Comes into play in the molecule when at least one atom has unshared pair of electrons
• D. Involves the distortion of electron cloud

Answer 1

The correct option is A Comes into play at the demand of attacking reagent

This effect exists only in the presence of an attacking reagent.

When a compound having multiple bonds is approached by a charged reagent, the pi electrons of the bond shifts towards one of the constituent atoms. The atom which acquires the electron pair gets a -ve charges while other atoms get a +ve charge.