# The bond between which two atoms has the greatest degree of polarity in the following molecule?

Jan 4, 2017

Between the oxygen and the hydrogen......

#### Explanation:

And how do we assess this? Probably the best metric is by $\text{electronegativity values}$, for which various scales are available, and which is conceived to be the ability of an atom in a chemical bond to polarize electron density towards itself.

Pauling electronegativity of oxygen is $3.44$, of hydrogen, $2.20$, and of carbon, $2.55$. Given these values, the $C - O$ bond is LESS polar, less charge separated, than the $O - H$ bond. This makes sense in that we know that the water molecule, which features $O - H$ bonds, is a highly polar molecule. Alcohols, which feature $O - H$ bonds, generally have some solubility in water.