WORLDKINGS - On This Day - August 01, 2022 - British scientist Joseph Priestley discovers oxygen gas in 1774

30-07-2022

(Worldkings.org) Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.