Question

What is the strongest intermolecular force? Why?

Answer 1

1. Intermolecular force is defined as the attraction and repulsion between the atoms or molecules of the substance is known as intermolecular force.
2. The strongest intermolecular force is seen in dipole-dipole interaction and it occurs only in the polar molecules.
3. The descending order of intermolecular force is $\mathrm{dipole}-\mathrm{dipole}\mathrm{interaction}>\mathrm{dipole}\mathrm{induced}\mathrm{dipole}\mathrm{force}>\mathrm{London}\mathrm{forces}$.
4. The strongest type of dipole-dipole interaction is Hydrogen bonding.
5. Dipole-dipole interaction exists between the two permanent dipoles which interact between the partially positive charge ion of a molecular and the partially negative charge ion of another molecule.
6. For example, H-bonding between two water molecules.