Which is the best description of hydrogen bonding? Which is the best description of hydrogen bonding? the association between a hydrogen atom which is somewhat positive because it is bonded to a small electronegative atom and an atom of O, N or F on another molecule the association between hydrogen of one molecule and a region of another molecule which has become negative due to temporary shifts in electron density the unique chemical bonds between hydrogen and any other atom in the same molecule the temporary attraction between hydrogen atoms on different molecules resulting from shifts in electron density the polarity associated with a bond between hydrogen and a small electronegative atom to which it is bonded

The best description of hydrogen bonding is the association between a hydrogen atom which is somewhat positive because it is bonded to a small electronegative atom and an atom of O, N or F on another molecule. (this is the first choice)

Explanation:

Hydrogen bonding is a special type of intermolecular force due to dipole - dipole atraction.

In order to the hydrogen bonding can be formed, the hydrogen atom in a molecule must be covalently bonded to an atom of oxygen (O), nitrogen (N), or fluor (F).

The most common example of hydrogen bonding is that of water molecules (H₂0).

Due to the relatively high electronegativity difference between hydrogen (H) and oxygen (O) atoms, each H will bear a high partial positive charge (δ+) and each O will have a high partial negative charge (δ-). Thus, the negative end of each H₂O molecule will be attracted to the negative part of other (neighbor) H₂O molecule. This attraction is the hydrogen bonding and is responsible for many important special properties of water.