Question

What do you call a full valence shell?

Answer 1

1. The outermost shell of an atom is termed valence shell.
2. The full valence shell means, the valence shell is fully occupied and forms a stable octet.
3. The halogens like Helium, Neon, Argon, Xenon, etc. have fully filled valence shells.
4. The atomic number of He is 2, so, the electronic configuration of the Helium atom is 2 (Fully filled valence shell).
5. Similarly, the atomic number of Neon is 10, so, its electronic configuration is 2,8 (Fully filled valence shell).