EVERYDAY SCIENCE

Detailed explanation-1: -Covalent compounds have generally low melting and boiling points.

Detailed explanation-2: -Covalent molecular They have low melting points and boiling points because the attractions between molecules are easy to overcome. They do not conduct electricity because there are no free charges to move.

Detailed explanation-3: -Simple molecules have low melting and boiling points. The melting and boiling points of simple covalent compounds is usually low. This is because the intermolecular forces of attraction between molecules are weak and easy to overcome.

Detailed explanation-4: -The molecules of covalent compounds are held by weak intramolecular forces. Thus, a very small amount of energy is required to break the bonds between two or more molecules. That is why they have low melting and boiling points.

Detailed explanation-5: -When simple molecular substances melt or boil, it is these weak intermolecular forces that are overcome. The covalent bonds are not broken. Very little energy is needed to overcome the intermolecular forces, so simple molecular substances usually have low melting and boiling points.