Hydrogen Bond It is defined as the force of attraction existing between hydrogen atom covalently bonded to highly electronegative atom (N, O or F) and the electronegative atom belonging to another molecule of the same or different substance. It is represented by dotted lines. The chains possess a zig-zag structure.

(a) Why are resonance structures necessary to describe the bonding in molecules like benzene, carbonate ion, or nitrate ion? (b) Given two molecules—SF₆ and NH₃—evaluate which one better conforms to the octet rule and justify your answer. (c) Which of the two compounds will have intermolecular hydrogen bonding and which compound is expected to show intramolecular hydrogen bonding

TextOctet Rule and Its LimitationsResonance Structures of MoleculesHydrogen Bond and Its Types