Argon (Ar) is a noble gas and exists as a monatomic gas. This means it exists as individual atoms, not bonded to other atoms.

Therefore, argon does not form covalent or ionic bonds.

Here's why:

* Covalent bonds involve the sharing of electrons between atoms. Argon has a full outer shell of electrons, making it very stable and unreactive. It doesn't need to share electrons to achieve stability.

* Ionic bonds involve the transfer of electrons between atoms, resulting in positively and negatively charged ions that attract each other. Argon's stable electron configuration makes it unlikely to lose or gain electrons to form ions.

In summary, argon's lack of reactivity and stable electron configuration prevent it from forming any type of chemical bonds.