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Oxygen - Wikipedia
WEBOxygen 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 ...
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Oxygen Saturation and Dangerously Low Oxygen Levels
WEB5 days ago · Oxygen saturation, or "O2 sat" for short, is a measure of how much oxygen is in your blood. For most healthy adults and children, a normal oxygen saturation level is between 95% and 100%. Hypoxemia occurs with lower levels of oxygen in the blood and can lead to complications or even death at dangerously low levels below 90%.
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Blood Oxygen Levels: What Is a Normal Level? - Healthline
WEBJun 29, 2023 · In most people, a healthy blood oxygen level is 95–100%. Anything below 95% is considered low and may put you at risk of hypoxemia. That said, people with certain conditions, such as COPD, may ...
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Oxygen | O2 | CID 977 - PubChem
WEBOxygen | O2 | CID 977 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
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Oxygen compounds - Wikipedia
WEBOxygen compounds. Water (H O) is the most familiar oxygen compound. The oxidation state of oxygen is −2 in almost all known compounds of oxygen. The oxidation state −1 is found in a few compounds such as peroxides. Compounds containing oxygen in other oxidation states are very uncommon: − ( superoxides ), − ( ozonides ), 0 (elemental ...
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