This is a fundamental idea in the design of most modern batteries. Draw a Lewis structure for sulfuric acid. Formal charges are considered a part of any Lewis structure, and must be included as well. Briefly describe how the polarity of a chemical bond is estimated by using only the Lewis structure of a molecule. Illustrate your answer with the S-O bond in sulfuric acid.
Bond polarity is a result of uneven distribution of the electron density within a covalent bond.
This is analyzed by considering the electronegativities of the bonded atoms. Oxygen is more electronegative than sulfur, so the bonding electron density is greater toward the oxygen. The slight negative charge that results on oxygen is designated with a d - . This leaves a deficiency of bonding electron density on the sulfur. Circle the structure in the previous question that is the most accurate representation of this ion.