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 a potent oxidizing agent that readily forms oxides with most elements as well as with other compounds.

Jun 13, 2024 · Your blood oxygen level—sometimes referred to as SpO2—measures how much oxygen is circulating in your bloodstream. There are many ways to measure blood oxygen, and options are increasing with wearable health devices like smartwatches.

Oxygen is an element displayed by the symbol O, and atomic number 8. It is an essential element for human survival. Decreased oxygen levels may be treated with medical oxygen therapy.

Apr 8, 2025 · Oxygen is a colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.

Oxygen is more than a fifth of the Earth's atmosphere by volume. In the air, two oxygen atoms usually join to make dioxygen (O. 2), a colourless gas. This gas is often just called oxygen. It has no taste or smell. It is pale blue when it is liquid or solid. Oxygen is part of the chalcogen group on the periodic table. It is a very reactive nonmetal.

Jan 10, 2017 · O is a singular oxygen atom. O 2 is a molecule made of two oxygen molecules. Our atmosphere is made of mostly O 2, which our bodies have evolved to breathe. We breathe in O 2 and cellular respiration requires it (C 6 H 12 O 6 +6O 2 →6CO 2 +6H 2 O). O is oxygen, while O 2 is dioxygen.

Oxygen (pronunciation: OK-si-jen) is a colorless element that belongs to the group of Chalcogens in the periodic table, and it is represented by the chemical symbol O [1, 2, 3]. A highly reactive non-metal, it can easily form oxides with most of the other elements and their compounds [3].

Jan 21, 2025 · Oxygen (O) refers to the element, while O₂ is diatomic oxygen, the common, stable form of oxygen gas in the Earth’s atmosphere. What’s Oxygen Used For? Oxygen is used for respiration, medical treatments, water treatment, and as an industrial oxidizing agent.

Oxygen is one of the most important elements in the periodic table with the chemical symbol O. One of the compounds of Oxygen (O2) is the main factor for sustaining life on Earth. It is colourless, odourless, and tasteless gas.

Oxygen is the third most abundant element in the Universe. The most common allotrope of elemental oxygen is dioxygen O 2. It is primarily present in the atmosphere of the Earth and is a major part of gaseous content of the biosphere.