Oxygen

``````````````````````````````````````````````````````````````````````````````````````````````````````````` Oxygen ( /??ks?d??n/ OK-si-jin) is the component with atomic take 8 and represented by the symbol O. Its name derives from the Hellenic roots ???? (oxys) (acid, liter entirelyy sharp, referring to the sour malodor of acids) and -????? (-gen?s) ( recruitr, literally begetter), because at the time of naming, it was mistakenly vox populi that all acids required assort O in their composition. At standard temperature and pressure, two atoms of the section bind to form ditype O, a colorless, odorless, tasteless diatomic boast with the formula O2. Oxygen is a member of the chalcogen group on the periodic table, and is a super antiphonal nonmetallic member that readily forms compounds (notably oxides) with al conterminous all other elements. By grass, type O is the third around plentiful element in the universe afterwards total heat and helium[1] and the most abundant element by mass in the dry lands crust, reservation up just about half of the crusts mass.[2] Free oxygen is also chemically reactive to appear on Earth without the photosynthetic action of brisk organisms, which use the energy of sunshine to produce elemental oxygen from water.

uncomplicated O2 only began to put in in the atmosphere after the evolutionary appearance of these organisms, nearly 2.5 meg years ago.[3] diatomic oxygen gas constitutes 20.8% of the muckle of air.[4] Because it comprises most of the mass in water, oxygen comprises most of the mass of living organisms (for example, about two-thirds of the humankind bodys mass). All major classes of geomorphologic molecules in living organisms, much(prenominal) as proteins, carbohydrates, and fats, contain oxygen, as do the major inorganic compounds that comprise animal shells, teeth, and bone. Elemental oxygen is produced by cyanobacteria, alga and plants, and is used in cellular breathing for all mingled life. Oxygen is toxic to obligately anaerobiotic organisms, which were the...If you urgency to get a full essay, order it on our website: Orderessay

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