# What is "polarity"?

And polarity is a molecular phenomenon, neither an atomic nor an elemental property. Molecular polarity can be assessed from the vector sum of the individual bond dipoles within the molecule. For example, water, $O {H}_{2}$, is a molecular dipole, i.e. $\stackrel{\delta +}{H} - \stackrel{\delta -}{O} - \stackrel{\delta +}{H}$, because the vector sum of the dipole is NON-ZERO; so is $C H C {l}_{3}$. But ${\text{CCl}}_{4}$ is NON-POLAR because the bond-dipoles sum to ZERO.