Answer:
Element is chemically active in between Sodium and Neon is explained below in details.
Step-by-step explanation:
Electrons revolve the electron in "cases" (power levels), and only a specific quantity of electrons can survive in each case. ... For example, Sodium has one valence electron, Neon has eight valence electrons, and Chlorine has seven valence electrons. The quantity of valence electrons an atom has concluded its reactivity.