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Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table (Group 6) and is a highly reactive nonmetal and oxidizing agent that readily forms oxides.
Symbol: O Atomic mass: 15.9994 u ± 0.0004 u Atomic number: 8 Electron configuration: [He] 2s22p4 Melting point: -218.8 °C Boiling point: -183 °C Discoverers: Carl Wilhelm Scheele, Joseph Priestley
