Nitrogen | Definition, Symbol, Uses, Properties, Atomic Number,
Dec 6, 2024 · Nitrogen, nonmetallic element of Group 15 [Va] of the periodic table. It is a colorless, odorless, tasteless gas that is the most plentiful element in Earth’s atmosphere and is a constituent of all living matter.
Nitrogen - Properties, Reactions, Compounds | Britannica
Dec 6, 2024 · Nitrogen - Properties, Reactions, Compounds: Nitrogen is a colourless, odourless gas, which condenses at −195.8 °C to a colourless, mobile liquid. The element exists as N2 molecules, represented as :N:::N:, for which the bond energy of 226 kilocalories per mole is exceeded only by that of carbon monoxide, 256 kilocalories per mole.
nitrogen - Kids | Britannica Kids | Homework Help
Nitrogen has no color, taste, or smell. On its own it is not very active. It must be combined in compounds to be used by living things. Nitrogen compounds help plants grow and make up protein in animals. Nitrogen becomes a liquid at very low temperatures.
nitrogen summary | Britannica
nitrogen, Gaseous chemical element, chemical symbol N, atomic number 7. A colourless, odourless, tasteless gas, it makes up 78% of Earth’s atmosphere and is a constituent of all living matter. As the nearly unreactive diatomic molecule N 2, it is useful as an inert atmosphere or to dilute other gases.
Nitrogen cycle | Definition & Steps | Britannica
Dec 17, 2024 · Nitrogen cycle, circulation of nitrogen in various forms through nature. Nitrogen, a component of proteins and nucleic acids, is essential to life on Earth. Although 78 percent of the atmosphere is nitrogen gas, this gas is unusable by most organisms until it is made available by a series of microbial transformations.
nitrogen - Students | Britannica Kids | Homework Help
Most nitrogen exists as a free element in the atmosphere. The compounds it forms are extremely active and essential to all living things. Protoplasm in living cells requires nitrogen for its formation. Protein, which is essential to life, is composed of nitrogen compounds linked together. Despite the abundance of free nitrogen in the air, it ...
Nitrogen - Essential, Compounds, Cycle | Britannica
Dec 6, 2024 · Nitrogen - Essential, Compounds, Cycle: As might be expected in view of the importance of the presence of nitrogen in living matter, most—if not all—organic nitrogen compounds are physiologically active. Most living organisms cannot utilize nitrogen directly and must have access to its compounds.
Nitrogen - Compounds, Reactions, Uses | Britannica
Dec 6, 2024 · Nitrogen - Compounds, Reactions, Uses: Although the other applications are important, by far the greatest bulk of elemental nitrogen is consumed in the manufacture of nitrogen compounds. The triple bond between atoms in the nitrogen molecules is so strong (226 kilocalories per mole, more than twice that of molecular hydrogen) that it is ...
Nitrogen group element | Properties, Uses, & List | Britannica
nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).
Nitric oxide | Uses, Facts, & Definition | Britannica
Nov 14, 2024 · nitric oxide (NO), colourless toxic gas that is formed by the oxidation of nitrogen. Nitric oxide performs important chemical signaling functions in humans and other animals and has various applications in medicine .