Nitrogen chemical symbol

The chemical symbol of nitrogen is n? Usually it is a colorless and odorless gas, and the density of nitrogen is generally smaller than that of air. Nitrogen is chemically inactive and difficult to react with other substances at room temperature, so it is often used to make preservatives.

The chemical formula of nitrogen is n? It is a colorless and odorless gas at room temperature, with a melting point of 63K, a boiling point of 77K and a critical temperature of 126K, which is difficult to liquefy. The solubility is very small. Under the atmospheric pressure of 283K, integrated water can dissolve 0.02 volume of nitrogen. Nitrogen accounts for 78.08% of the total atmosphere and is one of the main components of air.

Nitrogen is a gas that is difficult to liquefy. Nitrogen will liquefy into colorless liquid at extremely low temperature, and white crystalline solid will be formed when the temperature is further lowered. In production, nitrogen is usually filled in black steel cylinders.

Positive nitrogen is acidic and negative nitrogen is alkaline. Because the triple bond in nitrogen molecule is very strong and difficult to be destroyed, its chemical properties are very stable. Only under the conditions of high temperature and high pressure and the presence of catalyst can nitrogen components react with hydrogen to produce ammonia. At the same time, because the chemical structure of nitrogen molecule is relatively stable, the molecular structure of cyanide ion CN- is similar to that of C2 2- and calcium carbide CaC 2.