Development of the Modern Freezer. Bacteria are usually the cause of food decay, but they can't grow as well or at all in freezing temperatures, which are at 32 degrees Fahrenheit (0 degrees Celsius) or lower.
HF- polar molecule: dipole-dipole forces. There are also dispersion forces and H bond between HF. BF3- nonpolar: dispersion forces. Ar- Dispersion forces between Ar atoms.
This difference in the strength of the IMF leads to a difference in the boiling points of the compounds, CH 3 Cl boils at 249 K and CH 3 CN boils at 355 K. For similarly sized molecules, the larger the dipole moment (m) the stronger the IMF.nter molecular forces exist between molecules and influence the physical properties. We can think of H 2 O in its three forms, ice, water and steam. In all three cases, the bond angles are the same, the dipole moment is the same, the molecular shape is the same and the hybridization of the oxygen is the same.