Question

Define "Hydrogen Bond"

Answer 1

Answer:

Hydrogen bond is a special type of dipole-dipole interaction between the hydrogen atom in a polar bond, such as N-H, O-H, or F-H, and electronegative O,N or F atom. The interaction is written:

                                        A-B . . . B        or           A-H . . . .A

A and B represent O,N or F; A-H is one molecule or part of a molecule and B is a part of another molecule, and the dotted represents the hydrogen bond. So, hydrogen bond is a type of intermolecular forces (attractive forces between molecules, NOT between atoms of the same molecule), and only a few elements can participate on hydrogen bond formation.

Note: dipole-dipole interactions are forces between polar molecules, that is, between molecules that possess dipole moments.