What is the chemical composition of ozone?

Ozone is a triatomic molecule comprised of three oxygen atoms, which is represented chemically as O₃. This unique structure distinguishes ozone from diatomic oxygen, which consists of just two oxygen atoms (O₂). The extra oxygen atom in ozone gives it distinct physical and chemical properties, including its role in absorbing ultraviolet (UV) radiation in the Earth's stratosphere, contributing to the protection of living organisms from harmful UV exposure. Therefore, the correct identification of ozone’s composition as three oxygen atoms underlines its significance within environmental science, particularly regarding atmospheric chemistry and reactions that influence air quality and climate dynamics.