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In the Greek is where the etymological origin of the word we are going to analyze is: nitrogen. Specifically we can make clear that it is formed by the union of the word nitron which means "potassium nitrate" and gen which is equivalent to "generation." However, it must be made clear that who created this term was none other than the French chemist Jean Antonie Chaptal in the year 1790.

It is known as nitrogen to the chemical element that is characterized by having atomic number 7 and what symbolizes with the letter N . It's about a gas no color or smell and tasteless character that is present in the fourth fifth of the atmosphere air (in its molecular version, recognized as N2 ).

It should be noted that nitrogen is often used as refrigerant and is useful in the process of formation of ammonia which then allows to create fertilizers and explosives, among other products. With nitrogen it is also possible to manufacture nitric acid .

Being an inert fluid, nitrogen is usually described as azote (that is to say, "lifeless") and, in ancient times, even the symbol was assigned Az to identify it It is considered that, officially, the chemist of Scottish origin discovered it Daniel Rutherford (1749 -1819 ), who in 1772 unveiled some of its properties.

Nitrogen is the most abundant compound in our atmosphere planet , with the 78,1% of its volume It is also present in the 3% of the elementary structure of the organism of human beings and appears in the remains of specimens belonging to the animal kingdom. Several scientists, in addition, have detected some compounds from outer space where the presence of nitrogen is also noticed.

This element, on the other hand, is an essential compound of nucleic acids and of the amino acids . When the hydrogen compounds have cyanide ions, they constitute salts of high toxic power that can be fatal.

It is important that we also establish that one of the main studies that have been carried out with nitrogen as its central axis has been that of its effects on human health. Specifically, it has been established that the changes that man has generated in the atmosphere, through pollution, have increased the proportions of the elements that make up that bringing the individual to be, for example, affected by low levels of vitamin TO.

He nitrogen in its liquid version it is maintained at an identical temperature or lower than its boiling temperature (according to measurements, at -195.8 ° C). It is possible to generate it on an industrial scale from a fractional distillation and is usually used to seal the waterways in public works.

It is known as cycle of nitrogen Finally, to the biological and abiotic processes that allow the supply of the element to living beings. The dynamic balance of biosphere composition depends on these processes.

This cycle is composed of several clearly defined phases, the first one being the one called Nitrogen fixation and assimilation. It would be followed by ammonification, nitrification and finally known as denitrification, which is the one in which the reduction of nitrate ion to diatomic nitrogen occurs.

The last element mentioned, also known as dinitrogen or molecular nitrogen, we can establish that it is a gas that is approximately 78% of the atmospheric air. Among its main hallmarks are the colorless, inert and tasteless being and the one that is used very frequently in what are the different tasks and investigations in the field of cryogenics.

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