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en.wikipedia.org/wiki/Oxygen

Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and ...

education.jlab.org/itselemental/ele008.html

The Element Oxygen - Basic Physical and Historical Information.

www.rsc.org/periodic-table/element/8/oxygen

Element Oxygen (O), Group 16, Atomic Number 8, p-block, Mass 15.999. Sources , facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

www.livescience.com/28738-oxygen.html

Sep 28, 2014 ... Breathe in … breathe out. Ahh. Hooray for oxygen, the element that keeps much of life on Earth humming. Element No. 8 on the Periodic Table ...

www.thoughtco.com/oxygen-facts-p2-606571

Mar 11, 2017 ... Get facts on the chemical and physical properties of the element oxygen.

www.ducksters.com/science/chemistry/oxygen.php

Kids learn about the element oxygen and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of  ...

www.britannica.com/science/oxygen

Aug 22, 2017 ... Oxygen (O), nonmetallic chemical element of Group 16 (VIa, or the oxygen group ) of the periodic table. Oxygen is a colourless, odourless, ...

www.chemicalelements.com/elements/o.html

Oxygen at Chemical Elements.com. Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. Basic Information. Name: Oxygen Symbol: ...

www.hobart.k12.in.us/ksms/PeriodicTable/oxygen.htm

Water (H2O); Oxygen difluoride (OF2). Interesting facts. It is the third most abundant chemical element in the universe after hydrogen and helium. It is the most ...