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Also known as element 8, oxygen atom, ₈O, Oxygen, E948

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Oxygen is a chemical element with the symbol O and atomic number 8. It has an atomic mass of 15.999 and an electronegativity of 3.44. The element exhibits oxidation states of -2, -1, 1, and 2. Its electron configuration is 1s² 2s² 2p⁴, and it belongs to period 2 and group 16. Oxygen is classified as a lithophile and is a component of water.

The element was discovered in 1774 in Calne and Sweden by Carl Wilhelm Scheele and Joseph Priestley. It is named after acid and is the opposite of phlogiston. Oxygen has an ionization energy of 7469.2 and a radius of 152. It is described by sources including the Armenian Soviet Encyclopedia, Brockhaus and Efron Encyclopedic Dictionary, The Nuttall Encyclopædia, and the Encyclopædia Britannica 11th edition.

Synthesized by Vinony from 25 facts across 3 sources: Wikidata, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Research

1,024,644 papers

[Oxygen therapy of patients with chronic obstructive bronchitis and pulmonary emphysema (review of the foreign literature)].ReviewKlinicheskaia meditsina · 1984Chuchalin AG, Aleksandrov OV
Problems with equipment in oxygen therapy.ReviewInternational anesthesiology clinics · 1982Geiger K, Hedley-Whyte J
A New Multifunction Oxygenator With a Dual-Chamber Gas Exchanger to Reduce Dependence on Oxygen Supply.ASAIO journal (American Society for Artificial Internal Organs : 1992) · 2025Han D, Zhang J, Shah A et al.DOI: 10.1097/MAT.0000000000002396
Computational Modeling of Oxygen Transfer in Artificial Lungs.Artificial organs · 2018Kaesler A, Rosen M, Schmitz-Rode T et al.DOI: 10.1111/aor.13146
Oxygen permeability of carbon-surfaced microporous membranes.Journal of biomedical materials research · 1980Borovetz HS, Mateer DD, Hardesty RL et al.DOI: 10.1002/jbm.820140205
Follow the Oxygen: Comparative Histories of Planetary Oxygenation and Opportunities for Aerobic Life.Astrobiology · 2019Ward LM, Stamenković V, Hand K et al.DOI: 10.1089/ast.2017.1779
The double-capillary-oxygenator.Transactions - American Society for Artificial Internal Organs · 1972Clevert HD, Mohnhaupt R, Affeld K et al.DOI: 10.1097/00002480-197201000-00096
Intravascular oxygenation.ReviewPerfusion · 1994Wheeldon DDOI: 10.1177/026765919400900305

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