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Oxygen is a chemical element; it has the symbol O and its atomic number is 8. It is a member of the chalcogen group in the periodic table. It is highly reactive, a nonmetal, and a potent oxidizing agent …

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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. Treatment …

Oxygen makes up 21% of the atmosphere by volume. This is halfway between 17% (below which breathing for unacclimatised people becomes difficult) and 25% (above which many organic …

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. …

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Dioxygen (O2), the common allotrope of oxygen Oxide (O2−), an ion Superoxide (O− 2), an ion Dioxygenyl (O+ 2), an ion Doubly ionized oxygen (O2+), an ion O (2), the 2-dimensional orthogonal …

Oxygen is a chemical element. It has the symbol O and atomic number 8. It is a colorless, odorless, and tasteless gas at 25 degrees Celsius at Standard atmosphere (a pressure). Oxygen is part of the air …

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