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1 dzień temu · Oxygen is a chemical element; it has 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. Oxygen is the most abundant element in Earth's crust, and after hydrogen and helium, it ...
3 godz. temu · Queens is a borough of New York City, coextensive with Queens County, in the U.S. state of New York.Located at the western end of Long Island, it is the largest of the five New York City boroughs by area. It is bordered by the borough of Brooklyn and by Nassau County to its east, and shares maritime borders with the boroughs of Manhattan, the Bronx, and Staten Island, as well as with New Jersey.
