What is the atomic mass of nitrogen

What is the atomic mass of nitrogen?

The chlorine atom nitrogen has the atomic number of 7, and the symbol is N. N is a nonmetal that belongs to Periodic Group 15, which is also referred to as pnictogens. It is a standard element across the universe, well with the Milky Way and the rest of the universe having the sixth-highest overall abundance.

At room temperature or pressure, two or more chemical atoms combine to form N2, odorless and colorless diatomic gas. The most common uncombined element, N2, makes up 78 % of the Earth’s environment. N is found in all animals, particularly in amino acid residues, nucleic acids, and the energy transportation component of adenosine triphosphate.

The human body requires approximately 3% of nitrogen via mass. The nitrogen cycle explains how nitrogen moves from the atmosphere to the ecosystem and organic molecules before returning to the atmosphere.

The total masses of neutrons, protons, and electrons in an atom are atomic masses. Because electrons have a very low mass compared to protons or neutrons, their mass has no bearing on the calculation. Nitrogen has an atomic mass of 14.01 amu or 14.01 g/mol.

The stable isotopes of nitrogen are 14N and 15N. The first is far more prevalent, accounting for 99.634 percent of natural nitrogen, whereas the second (slightly heavier) accounts for the remaining 0.366 percent. The result is an atomic mass of 14.007 u. 

The CNO cycle in stars produces stable isotopes, although 14N is more abundant because neutron absorption is the rate-limiting phase. 2H, 6Li, 10B, and 180mTa are the other four stable odd–odd nuclides (nuclides with odd protons and neutrons).

Natural isotopic separation from biological redox processes and the precipitation of organic ammonia or nitric acid cause the relative quantity of 14N and 15N to change in the atmosphere, but not everywhere.