![]() The origin of the name comes from the Greek words oxy genes meaning acid and forming (acid. Oxygen is a very reactive element and quite corrosive. Oxygen was discovered by Carl William Scheele (SE) in 1772. There are nearly 118 elements (at present) of which nearly 94 occur naturally on Earth. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions. Hydrogen atoms are covalently bonded to oxygen in a water molecule but also have an additional. Elements are pure substances which are composed of only one type of atom. Water is another example of a compound (H 2O) that also contains oxygen. O) is an oxide of hydrogen and the most familiar oxygen compound. It has an atomic weight of 15.999 and a density of. At optical wavelengths the forbidden oxygen III emission line is prevalent in many galactic spectra, whilst at radio wavelengths the OH megamasers are visible at great distances from the Sun in external galaxies.Īt standard temperatures and pressures on Earth, pure oxygen forms the diatomic molecule O 2. Oxygen is classified as a gas and nonmetal and is a member of the chalcogen group on the periodic table. ![]() Most oxygen atoms (>99.7%) have eight neutrons in their nucleus and isotopes are relatively rare.ĭue to its small atomic number and stability, there are many signatures of oxygen in the Universe. Oxygen is a highly reactive element and is capable of combining with most other elements. 4000Celsius Periodic Table The Royal Society of Chemistry's interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table. Oxygen accounts for nearly half of the mass of the. Melting Point: 54.36 K (-218.79☌ or -361.82☏). Oxygen is the third most abundant element in the universe and makes up nearly 21 of the earths atmosphere. Use the buttons above to change your view of the periodic table and view Murray Robertson’s stunning Visual Elements artwork. Click the tabs at the top to explore each section. Oxygen is produced in the cores of stars through the fusion of more simple elements like Hydrogen and Helium. The Element Oxygen Click for Isotope Data Oxygen Previous Isotopes Next 8 O Oxygen 15.9994. The Royal Society of Chemistrys interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table. Oxygen is the eighth element on the periodic table and as such has eight protons in its nucleus. The Periodic Table lists elements in ascending atomic number with Oxygen (O) being the eighth element. ![]()
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