氧 （英語： oxygen）是一種 化學元素， 化學符號 为 O， 原子序數 为8，在 元素週期表 中屬於 氧族元素 （16族 或 VI族）。 作为 非金屬，氧是具有高 反應性 的 氧化劑，能夠與大部分元素 结合 形成 氧化物 [3]。

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.

6 天之前 · Oxygen, a colorless, odorless, 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 forms compounds by reaction with practically any other element.

Oxygen forms a large part of the air on earth, and is needed by animals and plants to live. Air is composed mainly of nitrogen and oxygen. Deep-sea divers carry cylinders of oxygen on their backs. Mountain climbers use oxygen when they reach higher altitudes. Plants are the main source of atmospheric oxygen. The symbol for oxygen is O2.

Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697. B. Cordero, V. Gómez, A.E. Platero-Prats, M. Revés, J. Echeverría, E. Cremades, F. Barragán, S. Alvarez, Dalton Trans. 2008, 21, 2832-2838.

Oxygen is a colorless, tasteless and odorless gas. It readily dissolves in water, and more conveniently in freshwater as compared to seawater. The freezing point of oxygen is −218.79 …

2025年1月21日 · What is Oxygen? Oxygen is a colorless, odorless, and tasteless gas that is essential for life on Earth. It is the third most abundant element in the universe and makes up about 21% of the Earth’s atmosphere. Oxygen is crucial for respiration in living organisms and is used in various industrial applications.

2014年9月29日 · Oxygen is the third most abundant element in the universe, according to the Thomas Jefferson National Accelerator Facility. However, its reactivity made it relatively rare in early Earth's...

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].

Oxygen is a chemical element with an atomic number of 8 (it has eight protons in its nucleus). Oxygen forms a molecule (O 2) of two atoms which is a colorless gas at normal temperatures and pressures.