Nitrogen is a chemical element with symbol N and atomic number 7. Elemental nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78.09 percent of Earth’s atmosphere by volume.

What are some unique properties of nitrogen?

Nitrogen gas (chemical symbol N) is generally inert, nonmetallic, colorless, odorless and tasteless. Its atomic number is 7, and it has an atomic weight of 14.0067. Nitrogen has a density of 1.251 grams/liter at 0 C and a specific gravity of 0.96737, making it slightly lighter than air.

What is the biological significance of nitrogen?

Nitrogen is a critical limiting element for plant growth and production. It is a major component of chlorophyll, the most important pigment needed for photosynthesis, as well as amino acids, the key building blocks of proteins. It is also found in other important biomolecules, such as ATP and nucleic acids.

What is the chemical symbol of nitrogen?

Characteristics: Nitrogen is a colorless, odorless, tasteless, diatomic and generally inert gas at standard temperature and pressure. At atmospheric pressure, nitrogen is liquid between 63 K and 77 K.

What are the properties and uses of nitrogen?

A colourless, odourless gas. Nitrogen is important to the chemical industry. It is used to make fertilisers, nitric acid, nylon, dyes and explosives. To make these products, nitrogen must first be reacted with hydrogen to produce ammonia.

What is the properties of nitrogen gas?

Nitrogen (N2) is a colorless, odorless and tasteless gas that makes up 78.09% (by volume) of the air we breathe. It is nonflammable and it will not support combustion. Nitrogen gas is slightly lighter than air and slightly soluble in water. It is commonly thought of and used as an inert gas; but it is not truly inert.

Is nitrogen reactive or nonreactive?

Nitrogen is a rather unreactive element, and the reason is that the N≡N bond energy is 946 kJ mol⁻¹. This lack of reactivity is somewhat unlike other nonmetals given the position of the atom in the periodic table and the fact that nitrogen is a nonmetal having an electronegativity of 3.0 (the third highest value).

What is biological nitrogen fixation Class 8?

The process of converting nitrogen gas of the atmosphere or air into compounds of nitrogen (which can be used by the plants)is called nitrogen fixation. The nitrogen gas is the free nitrogen whereas nitrogen compounds are said to be fixed(converted into nitrogen compounds).

Which of the following is associated with biological nitrogen fixation?

The correct answer is Blue-green algae.

What is the importance of nitrogen in the atmosphere?

Nitrogen (N) is one of the building blocks of life: it is essential for all plants and animals to survive. Nitrogen (N2) makes up almost 80% of our atmosphere, but it is an unreactive form that is not accessible to us. Humans and most other species on earth require nitrogen in a “fixed,” reactive form.

What is the chemical formula of nitrogen?

Nitrogen | N2 – PubChem.

What is the difference between the symbol and the formula of nitrogen?

The chemical symbol for nitrogen is N. The chemical formula for nitrogen gas is N₂. The formula can be represented as N≡N. Nitrogen gas is one of the diatomic elements, in which one molecule comprises of two atoms of the same element bonded by one or more covalent bonds.

What is nitrogen made of?

On a small scale, pure nitrogen is made by heating barium azide, Ba(N₃)₂. Various laboratory reactions that yield nitrogen include heating ammonium nitrite (NH₄NO₂) solutions, oxidation of ammonia by bromine water, and oxidation of ammonia by hot cupric oxide.