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Oxygen was the atomic weight standard for the other elements until 1961 when it was replaced by carbon 12. Oxygen made a good choice for the standard before much was known about isotopes because although there are 3 natural isotopes of oxygen, most of it is oxygen-16. This is why the atomic weight of oxygen (15.9994) is so close to 16.


Facts About Oxygen. By Stephanie Pappas 29 September 2014. ... Oxygen has eight total electrons — two orbit the nucleus in the atom's inner shell and six orbit in the outermost shell. The ...


Fun Oxygen Facts for Kids Interesting Oxygen Element Facts. Share Flipboard Email Print Elemental oxygen occurs in pure form as a liquid or gas consisting of two oxygen atoms covalently bonded to each other. PASIEKA, Getty Images Science. Chemistry Periodic Table Basics Chemical Laws


Surprising Oxygen Facts You Must Know: 11-15. 11. Oxygen is a non-metallic element. But of all non-metallic elements, it is actually the most reactive. 12. Cold water has more dissolved oxygen than warm water. This is why polar oceans have more oxygen dissolved in them than normal oceans and seas. 13.


Read on for its other uses and more amazing oxygen facts! Oxygen is an element with the chemical symbol O and atomic number 8. Oxygen is a very reactive element that easily forms compounds such as oxides. Under standard temperature and pressure conditions two oxygen atoms join to form dioxygen ...


Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.After hydrogen and helium, oxygen is the third-most abundant element in the universe by mass. At standard temperature and pressure, two ...


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 Facts. Oxygen (O) has an atomic number of eight. This odorless, colorless gas has eight protons in the nucleus, and is pale blue in its liquid and solid states. Interesting Oxygen Facts: One fifth of the Earth's atmosphere is made up of oxygen and is the third most abundant element in the universe by mass.


Here are 11 interesting facts about oxygen, abundant not only in our planet’s atmosphere, but also one of the most abundant elements in the universe. You can find out much more on our main oxygen page. 11 Interesting Facts about Element 8. By Dr. Doug Stewart. 1. Dry air is 21 percent oxygen, 78 percent nitrogen and 1 percent other gases.


Atoms are mostly empty space. The nucleus of an atom is extremely dense and contains nearly all of the mass of each atom. Electrons contribute very little mass to the atom (it takes 1,836 electrons to equal the size of a proton) and orbit so far away from the nucleus that each atom is 99.9% empty space.