Explanation:

The melting point of oxygen is 54.8 Kelvin, which is equivalent to -218.35 degrees Celsius or -361.03 degrees Fahrenheit. Oxygen melts at such a low temperature that frozen oxygen is not found naturally in the environment and simple molecular substances consist of molecules in which the atoms are joined by strong covalent bonds. However, the molecules are held together by weak forces so these substances have low melting and boiling points.