Here's why:
* Neutral atoms have an equal number of protons (positively charged particles) and electrons (negatively charged particles).
* Oxygen has 8 protons and 8 electrons. This balance makes it electrically neutral.
However, oxygen can become an ion under certain circumstances:
* Anion: Oxygen can gain two electrons, becoming a negatively charged ion called oxide ion (O2-).
* Cation: While less common, oxygen can lose electrons under extreme conditions to form a positively charged ion.
So, in its most common form, oxygen is a neutral atom. However, it can form ions depending on the specific chemical environment.
