p-orbitals.
A possible last sublevel for an element in group 18 of the periodic table (noble gases) is f. The noble gases have completely filled s and p orbitals, and the f orbitals would be the next in line for additional electrons.
Noble gases
This is the family of noble gases (group 18).
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Noble Gas Configurations
The p-block on the periodic table is the chunk of mostly nonmetals starting at group 13 that ends at the Noble gases on the far right side.
The valence electron shell of noble gases is full.
it only fills the S sublevel
A possible last sublevel for an element in group 18 of the periodic table (noble gases) is f. The noble gases have completely filled s and p orbitals, and the f orbitals would be the next in line for additional electrons.
A sublevel corresponds to s, p, d, f orbitals in electron configurations: 1st shell → 1s (1 sublevel) 2nd shell → 2s, 2p (2 sublevels) 3rd shell → 3s, 3p, 3d (3 sublevels) 4th shell → 4s, 4p, 4d, 4f (4 sublevels) 5th shell → 5s, 5p, 5d, 5f, 5g? Actually, 5g orbitals are not filled in ground-state elements, so we usually consider 5 sublevels as 5s, 5p, 4d, 4f, 5d, etc., depending on filling order. More practically, the noble gas with electrons filling up to 5 sublevels would be Xenon (Xe). Xenon’s electron configuration: Xe: 1 𝑠 2 2 𝑠 2 2 𝑝 6 3 𝑠 2 3 𝑝 6 3 𝑑 10 4 𝑠 2 4 𝑝 6 4 𝑑 10 5 𝑠 2 5 𝑝 6 Xe: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 5s 2 5p 6 Sublevels filled: 1s, 2s, 2p, 3s, 3p, 3d, 4s, 4p, 4d, 5s, 5p → counting distinct types per shell, you see 5 principal sublevels involved (s, p, d, f, …) in its electron configuration. ✅ Answer: goto.now/YJkWW 👈🏻
Noble gases
This is the family of noble gases (group 18).
The 3p sublevel is completed by the noble gas element Argon (Ar) which has 18 electrons in total.
Noble Gas Configurations
Helium has 2 valence electrons. All other noble gases have 8 valence electrons.
Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2 valence electrons) and have stable electronic configuration.
Group 18 contains eight valence electrons, namely the noble gases.