Define octet rule. Write its significance andlimitation. (Exercise - 4.5) OR What is electronic theory of chemical bonding?

Define octet rule. Write its significance andlimitation. (Exercise - 4

1.	Define octet rule. Write its significance andlimitation. (Exercise - 4.5) OR What is electronic theory of chemical bonding?
Answer» Solution :OCTET rule: Atoms can combine either by transfer of valence electrons from one atom to another (gaining or losing) or by sharing of valence electrons in ORDER to have an octet in their valence shells. This is KNOWN as octet rule. Kossel and Lewis in 1916 developed an important and Lewis THEORY of chemical combination between atoms known as ELECTRONIC theory of chemical bonding