Answer:
1. Oxygen Fluoride (O with F): covalent
2. Calcium Chloride (Ca with Cl): ionic
3. Sodium with Sodium (Na with Na): neither
Explanation:
1. Oxygen Fluoride (OF2)
Oxygen with Fluorine is covalent because both of these elements are <em>nonmetals</em>. Bonds that contain only nonmetals are covalent.
2. Calcium Chloride (CaCl2)
Calcium with Chlorine is ionic because there is one <em>metal </em>and one <em>nonmetal. </em>Bonds that contain one metal and one nonmetal are ionic.
3. Sodium with Sodium
Since this is not Sodium bonding with another element, it is neither ionic or covalent.