The document discusses the noble gases, which are located in group 0 of the periodic table. It provides details on the properties and chemical composition of the noble gases, which include helium, neon, argon, krypton, xenon, and radon. It also discusses the discovery of the noble gases and their incorporation into the periodic table. The document further summarizes the chemical properties and reactivity of the noble gases, noting that under certain conditions some can form compounds, especially xenon, which can form a variety of fluorides, oxides, and oxyfluorides.