The poorly shielded nucleus of hydrogen in one molecules of hydrogen in one molecule is attracted by the lone pair of electrons of the highly electronegative element of the neighboring molecule. As a result dative relationship is formed between the two molecules, this is why hydrogen bonding is the strongest among the all other vander wall’s forces. The hydrogen bonding in compounds containing fluorine, oxygen or nitrogen is represented by dotted line (------). Hydrogen bonding have influence on the physical properties of molecules like increase in bonding points, solubilities etc. Effect of hydrogen bonding on some physical properties: Hydrogen bonding greatly effects some physical properties of compound. Some example are given below. (a) Ice floats over the surface of water: This is because ice have strong hydrogen bonds. Ice has a tetrahedral structure i-e; each oxygen atom of oxygen ha...