Noble gases are categorized as nonmetals. This group of elements, which includes helium, neon, argon, krypton, xenon, and radon, is located in Group 18 of the periodic table. Noble gases are characterized by their full outer electron shells, which make them very stable and unreactive under standard conditions.
Unlike metals, noble gases do not exhibit properties such as electrical conductivity or malleability. They exist as colorless, odorless gases at room temperature and do not form bonds readily with other elements, which is a common trait of nonmetals. In summary, noble gases are distinctively nonmetals due to their unique chemical properties and position on the periodic table.