In C dipole-dipole intermolecular forces are present and in D ionic force is presently based on the presence of the ions and the dipoles.
What are intermolecular forces?
Intermolecular forces are the attraction and repulsion present between the molecules and bind them together. The force present in C is dipole-dipole intermolecular force while in D is ionic force.
The ionic bonds are stronger than the dipole intermolecular force as they have high melting and boiling point. In C dipole-dipole and hydrogen bonding, both are present because of the presence of the H, F, O, and N atoms.
In D polar molecules are present and also have ions making them an ion-dipole force which is the strongest force compared to the hydrogen, dipole-dipole, and van der Waal.
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