what is a oxgyen in short answer
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Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.
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Oxygen is the chemical element with the symbol O. It is the third-most common element in the universe, after hydrogen and helium. When alone, two oxygen atoms usually bind to make dioxygen (O2), a colourless gas. ... Dioxygen gas makes up 20.8% of the Earth's atmosphere.
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