The Scandinavian words (Old Norse mila, etc.) are from English. An ancient Roman mile was 1,000 double paces (one step with each foot), for about 4,860 feet, but there were many local variants and a modern statute mile is about 400 feet longer.
They are much weaker than ionic or covalent bonds and have a significant effect only when the molecules involved are close together (touching or almost touching). The figures show two arrangements of polar iodine monochloride (ICl) molecules that give rise to dipole-dipole attractions.Note: 1  Polar molecules have a partial negative end and a partial positive end. 2  The partially positive end of a polar molecule is attracted to the partially negative end of another.hey are much weaker than ionic or covalent bonds and have a significant effect only when the molecules involved are close together (touching or almost touching). The figures show two arrangements of polar iodine monochloride (ICl) molecules that give rise to dipole-dipole attractions.
Polar molecules with NâH, FâH, or OâH bonds exhibit dipole-dipole interactions (including hydrogen bonding) and dispersion forces. (a) (b) (c) (d) What kind(s) of intermolecular forces exist in (a) CCl 4 (l), (b) CH 3 COOH(l), (c) CH 3 COCH 3 (l), and (d) H 2 S(l).Worked Example 12.1 (cont.) Ion (a) (b) (c) (d) Solution (a) CCl 4 is nonpolar, so the only intermolecular forces are dispersion forces.ydrogen bonding only occurs in molecules that contain H bonded to a small, highly electronegative atom such as N, O, or F. Hydrogen Bonding F H F. 1/7/2013 2 Hydrogen Bonding Dispersion forces or London dispersion forces result from the Coulombic attractions between instantaneous dipoles of non-polar molecules.