* Molecular Compounds are formed by the sharing of electrons between nonmetals.
* Ionic Compounds are formed by the transfer of electrons between a metal and a nonmetal.
Let's analyze each compound:
* Xe: This is a noble gas element and exists as individual atoms, not a compound.
* ZnO: Zinc (Zn) is a metal, and oxygen (O) is a nonmetal. This is an ionic compound.
* SO2: Sulfur (S) and oxygen (O) are both nonmetals. This is a molecular compound.
* BeF2: Beryllium (Be) is a metal, and fluorine (F) is a nonmetal. This is an ionic compound.
Therefore, the only molecular compound in the list is SO2.