# Question 013b0

$\text{Hydrogen bonding}$ is an intermolecular bonding phenomenon that occurs when hydrogen is bound to a strongly electronegative element such as oxygen or fluorine or nitrogen. The heteroatom polarizes electron density away from the bond, giving a slightly positive charge to $H$, and a slightly negative charge to the heteratom, e.g. ""^(delta+)H-F^(delta-)#.