* O-2 is a diatomic molecule: It refers to a molecule formed by two oxygen atoms bonded together (O₂).
* Oxygen atoms are reactive: Oxygen atoms are highly reactive because they have two unpaired electrons in their outer shell.
* Formation of O₂: Oxygen atoms bond together to form O₂ molecules to achieve a stable configuration, filling their outer shells with eight electrons.
Here's how it happens:
1. Collision: Two oxygen atoms collide with sufficient energy.
2. Bonding: The unpaired electrons in each atom form a covalent bond, sharing their electrons. This forms a double bond between the two oxygen atoms.
3. Stable molecule: The resulting O₂ molecule has a stable configuration with filled electron shells.
Note: "O-2" is not a standard chemical notation. The correct notation for a diatomic oxygen molecule is O₂.
