Answer:
The answer to your question is; H2O and CO.
Explanation:
Ionic bonding is when a metal donates its valence electrons to a nonmetal.
Covalent bonding is when two nonmetals share electrons to reach noble gases' configuration.
NaF here we have a metal and a nonmetal, then the bonding is ionic.
MgO here, there is also a metal and a nonmetal, the bonding is ionic.
H2O here, there are two nonmetals, so this is a covalent bonding.
CO here, there are two nonmetals, the bonding is covalent.
