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.
They may be classified as polar and non-polar. A non-polar compound occurs when there is an equal sharing of electrons between two different atoms. Examples of household non-polar compounds include fats, oil and petrol/gasoline.Therefore (per the oil and water rule of thumb), most non-polar molecules are water insoluble (hydrophobic) at room temperature.hen comparing a polar and non-polar molecule with similar molar masses, the polar molecule generally has a higher boiling point, because of the dipole-dipole interaction between their molecules. The most common form of such an interaction is the hydrogen bond, which is also known as the H-bond.