Final answer:
Dinitrogen tetroxide, N₂O₄, has covalent bonds.
Step-by-step explanation:
This can be determined by considering the bonding between the atoms in the molecule. In N₂O₄, there are two nitrogen (N) atoms and four oxygen (O) atoms. Each nitrogen atom forms a triple bond with the other, resulting in six shared electrons. Additionally, each nitrogen atom shares two electrons with one oxygen atom, making a total of eight shared electrons with the oxygen atoms. The sharing of electrons between the atoms indicates covalent bonding, where the atoms share electrons to achieve a stable electron configuration.