Electronic formula of nitrogen.

Nitrogen in the periodic system of D.I. Mendeleev has atomic number seven. It belongs to the 15th group and to the second period. Nitrogen is a simple substance. Refers to diatomic gases, colorless and odorless. Most of the air we breathe is nitrogen. It is the most abundant gas on earth. Also the element nitrogen, the main element that is part of proteins.
Let’s go back to the electronic formula for nitrogen. The atomic mass of nitrogen is 7, therefore, 7 electrons are distributed over the levels. The formula is as follows: 1s²2s²2p³.