The correct order of increasing surface tension at a given temperature, CH(OH)CH₂ OH >CH₃CH₂CH₂OH>HOCH₂ CH₂ OH>HOCH₂
With higher intermolecular pressures, a molecule's surface tension rises. Here, every molecule that is there has a hydrogen bond. It is well known that as the number of O-H bonds in a given molecule increases, so does the degree of hydrogen bonding. Strong intermolecular forces are thought to exist in molecules with more H-bonds. Due to the hydrogen bonds between water molecules, it has the highest surface tension of any liquid, save for mercury. Water molecules near the liquid's surface that are in contact with air are held tightly together by surface tension to create an imperceptible film.
