Explain what is meant by the percent ionic character of a bond. Do any bonds have 100% ionic character?
Solution 21E Step 1 of 1 When in a molecule there is a polar covalent bond, we can assume there is a dipole moment because of the different electronegativity of the atoms involved. Electrons, however, keep on been shared between atoms, but in an unequal way because the will be more localized (it means they will “pass more time”) on the more electronegative atom. Percent ionic character is the ratio between the bond’s actual dipole moment to the dipole moment it would have if the electrons were completely transferred from one atom to another. Obviously there cannot exist a polar covalent bond having 100/ ionic character because it would imply we have a ionic bond, thus a total transfer of electrons from an atom to another one, and the consequent formation of anions and cations.