Here's why:

* Covalent Bonding: In covalent compounds, atoms share electrons to achieve a stable electron configuration. Sulfur and oxygen both need to gain electrons to become stable.

* Molecular Structure: Sulfur dioxide has a bent molecular geometry, with a central sulfur atom double-bonded to two oxygen atoms. This structure is due to the repulsion between the electron pairs in the molecule.

Let me know if you have any other questions about sulfur dioxide or covalent compounds!