Sulfur dioxide (SO2) is a polar molecule, meaning that it has a positive end and a negative end. The positive end of the molecule is the sulfur atom, and the negative end is the oxygen atom. The difference in electronegativity between sulfur and oxygen atoms creates a partial positive charge on the sulfur atom and a partial negative charge on the oxygen atom. These partial charges allow SO2 molecules to attract each other through dipole-dipole forces.
Dipole-dipole forces are intermolecular forces that occur between polar molecules. They are caused by the attraction between the positive end of one molecule and the negative end of another molecule. Dipole-dipole forces are weaker than hydrogen bonds and ionic bonds, but they are stronger than van der Waals forces.
