What is the atomic number of oxygen?

In: Periodic Table

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The atomic number of oxygen (O) is 8.

The atomic weight of O is 15.9994 grams per mole.

Oxygen gas exists as a diatomic molecule: O₂.

See the Web Links and the Related Questions to the left of this answer for a periodic table and more information about this element.

The atomic number of an element, its atomic weight, density and a number of its other basic properties can be found by typing the name of that element in the search box at this absolutely fabulous web site: http://en.wikipedia.org

First answer by Tigerwhit. Last edit by Quirkyquantummechanic. Contributor trust: 729 [recommend contributor]. Question popularity: 52 [recommend question]

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Webelements: Periodic table

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