Final answer:
The compounds OF₂, CuO, and SeO₂ can be classified as ionic or covalent based on the types of elements present and their electronegativity differences.
Step-by-step explanation:
The compounds OF₂, CuO, and SeO₂ can be classified as ionic or covalent based on the types of elements present and their electronegativity differences.
OF₂ is a covalent compound because it is made up of nonmetal elements (oxygen and fluorine) that share electrons to form a bond.
CuO is an ionic compound because it is made up of a metal element (copper) and a nonmetal element (oxygen). The metal loses electrons to form a cation (Cu²+), and the nonmetal gains electrons to form an anion (O²-).
SeO₂ is also a covalent compound because it is made up of nonmetal elements (oxygen and selenium) that share electrons to form a bond.