Hydrochloric acid is polar which means it has stronger bonds between it's molecules, unlike diatomic fluorine that is non-polar and has weaker bonds. That's why it has a higher boiling point.
The compound with the highest melting point is CH3 [CH2]14COOH.
This compound has the highest melting point because it has the highest number of CH2 bonds. The melting point of a compound refers to a particular temperature at which that substance changes from a solid to a liquid.
Scientists are able to understand Earth's interior by studying seismic waves. These are waves of energy that travel through Earth, and they move similarly to other types of waves, like sound waves, light waves, and water waves.