Polar Covalent Bond Examples of Molecules with Polar Covalent Bond Water (H2O) is a polar bonded molecule. The electronegativity amount of oxygen is 3.44, while the electronegativity of hydrogen is 2.20.
The bonding electrons in polar covalent bonds are not shared equally, and a bond moment results. However, a molecule may be polar or nonpolar depending on its geometry. For example, tetrachloro-methane (carbon tetrachloride, CCl 4) has polar C—Cl bonds, but the tetrahedral arrangement of the four bonds about the central carbon atom causes the individual bond moments to cancel.