* Oxygen as an element: Oxygen (O) is an element, and each atom of oxygen is made up of *one* oxygen atom.

* Oxygen as a molecule: Oxygen gas, which we breathe, is a molecule made up of *two* oxygen atoms bonded together (O₂).

* Oxygen in compounds: Oxygen is also found in many compounds, like water (H₂O), where it's bonded to other atoms.

So, it depends on what you're asking!

* If you're asking about a single *atom* of oxygen, then there's just one atom.

* If you're asking about a molecule of *oxygen gas*, then there are two atoms.

Let me know if you'd like to know more about oxygen! 😊