M20 - M21 Electronic configuration of néon

The properties of inert or noble gases are a result of their stable electronic configuration: for Ne full s and p orbitals The orbital energy levels are filled with pairs of electrons starting with the orbital with the lowest energy level, then the orbital (or orbitals) with the next highest energy level and so on.

In the case of neon, ₁₀Ne: 1s² 2s² 2p⁶ electrons filling the orbitals as follows:

electronic structure: 1s² 2s² 2p⁶.

Illustration M20-M21 represents the s and p orbitals. Since all three 2p orbitals are full, the electron density is spherically symmetrical.