What Does O2 Stand For?

O2 stands for Oxygen

O2, or oxygen, is a colorless, odorless gas essential for life on Earth. It constitutes approximately 21% of the atmosphere and is vital for the process of respiration in living organisms. In addition to its biological significance, oxygen plays a critical role in various industrial applications, including combustion, metal production, and water treatment. Its molecular structure, consisting of two oxygen atoms, allows it to readily form compounds with other elements, contributing to a wide range of chemical processes.