Oxygen, as we know it, is a diatomic element, meaning it exists naturally as a molecule composed of two oxygen atoms bonded together. We represent this molecule with the chemical formula O₂.

Here's a breakdown:

* Oxygen atom: The fundamental building block of oxygen is a single oxygen atom, with the symbol "O". It contains 8 protons and 8 neutrons in its nucleus, and 8 electrons orbiting around it.

* Oxygen molecule (O₂): Two oxygen atoms bond together to form a stable oxygen molecule (O₂). This is the form of oxygen we breathe and is essential for life.

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