properties of oxygen

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Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element. The viscosity of oxygen is 189 millipoises (at 0°C). The gray, metallic form of the element is the most stable under ordinary conditions; this form has the unusual property of greatly increasing in electrical conductivity when exposed to light. The most common substances, such as oxygen, are states, matter, solids, liquids, gases, and plasma. Diatomic oxygen gas currently constitutes 20.8 percent of the volume of air. Sulfur exists under ordinary conditions as a pale yellow, crystalline, nonmetallic solid; it is odourless and tasteless, combustible, and insoluble in water.

Carbon dioxide | Definition, Formula, properties, Uses, & Effects, Radium | Description, Properties, Symbol, Occurrence, Uses, & Isotope. It is much more reactive toward common organic molecules than is the triplet form of molecular oxygen. Singlet oxygen is a name given to several higher-energy species of molecular O2 in which all the electron spins are paired. On the basis of the finding that certain meteorites contain about 12 percent sulfur, it has been suggested that deeper layers of the Earth contain a much larger proportion. The element selenium (symbol Se) is much rarer than oxygen or sulfur, comprising approximately 90 parts per billion of the crust of the Earth. As such, it readily forms compounds (notably, oxides) with almost all other elements. Oxygen is among the most abundant and most important elements on the Earth.
(adsbygoogle = window.adsbygoogle || []).push({}); Oxygen is an important part of the atmosphere and is necessary to sustain terrestrial life. It converts from a gaseous state to a liquid state at a temperature of -182.96°C when it takes on a slightly bluish color. Its chemical symbol is S. It reacts with all metals except gold and platinum, forming sulfides; it also forms compounds with several of the nonmetallic elements. It has some scientific applications as a source of alpha radiation. It has resistance to flow – stickiness. A relationship between the first three members of the group was recognized as early as Oxygen is a colourless, odourless, 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.

The solubility of oxygen in water is temperature-dependent, and about twice as much (14.6 mg/L) dissolves at 0 °C than at 20 °C (7.6 mg/L). By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium, and the most abundant element by mass in the Earth’s crust, making up almost half of the crust’s mass. Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element. Oxygen is toxic to obligate anaerobic organisms (organisms which need a lack of oxygen for survival), which were the dominant form of early life on Earth, until O2 began to accumulate in the atmosphere. The elemental structure is a cubic crystal shape. For example, oxygen is a colorless and odorless gas, with a density greater than that of air, and a very low solubility in water. As such, it readily forms compounds (notably oxides) with almost all other elements. Physical properties are usually observed using our senses such as color, density, lightning, freezing point, boiling point, melting point, hardness, and smell. In the air, oxygen exists mostly as molecules each made up of two atoms (O2), although small amounts of ozone (O3), in which three atoms of oxygen make up each molecule, are present in the atmosphere. Modern version of the periodic table of the elements. The two oxygen atoms in diatomic oxygen are chemically bonded to each other with a spin triplet electron configuration. Physical properties of oxygen are properties that can be observed without turning the substance into another substance.

However, oxygen gas is colourless, odourless, and tasteless.

These orbitals are classified as antibonding (weakening the bond order from three to two), so the diatomic oxygen bond is weaker than the diatomic nitrogen triple bond, in which all bonding molecular orbitals are filled, but some antibonding orbitals are not. A relationship between the first three members of the group was recognized as early as 1829; tellurium was assigned its place by 1865, and polonium was discovered in 1898. Liquid oxygen can then be solidified or freeze at a temperature of -218.4°C, Your email address will not be published. Like selenium, it is less often found uncombined than as compounds of metals such as copper, lead, silver, or gold, and is obtained chiefly as a by-product of the refining of copper or lead.

Characteristics and Properties Under standard conditions oxygen forms a gas that is composed of molecules consisting of two oxygen atoms (O 2). Omissions?

Oxygen is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element. Liquid oxygen may also be produced by condensation out of air, using liquid nitrogen as a coolant. Liquid oxygen is attracted to a magnet to a sufficient extent that, in laboratory demonstrations, a bridge of liquid oxygen may be supported against its own weight between the poles of a powerful magnet.

Free oxygen is too chemically reactive to appear on Earth without the photosynthetic action of living organisms, which use the energy of sunlight to produce elemental oxygen from water.

See the article on Oxygen Element for additional information and facts about this substance. Professor of Chemistry, University of Minnesota, Minneapolis. During the chemical reaction, we observed chemical properties. Oxygen is represented by the chemical symbol O.
Oxygen and Corrosion of Steel Pipes - Oxygen concentration and temperature and the influence on corrosion of steel pipes; Oxygen Gas - Specific Heat - Specific heat of Oxygen Gas - O 2 - at temperatures ranging 175 - 6000 K; Pentane - Thermophysical Properties - Chemical, physical and thermal properties of pentane, also called n-pentane. Selenium compounds are toxic to animals; plants grown in seleniferous soils may concentrate the element and become poisonous.

It is vital in industrial, medical and engineering settings. In cosmic abundance, sulfur ranks ninth among the elements, accounting for only one atom of every 20,000–30,000.

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