# Wikipedia:Picture peer review/Electron shells

### Electron Shells

Uranium has a high number of electrons; this diagram shows how they are arranged.
An electron shell is a group of atomic orbitals with the same value of the principal quantum number n. Electron shells are made up of one or more electron subshells, or sublevels, which have two or more orbitals with the same angular momentum quantum number l. Electron shells make up the electron configuration of an atom. It can be shown that the number of electrons that can reside in a shell is equal to ${\displaystyle 2n^{2}}$.

This peer review is for a set of images, the entirety of which can be found here. While any one alone is obviously unworthy of featured status, together, the clarity that they demonstrate the concept of the electron shell (stemming from simplicity) may be worth "featured set" status. The set is comprehensive and uniform; they are all SVGs; the author for all of them is Pumbaa (original work by Greg Robson); they are all under the same acceptable license. Most do not appear in any article, but the sodium image appears in electron shell and neon appears in noble gas. I put up Uranium because it's a fairly well known element that has a high number of electrons; hydrogen makes a more natural "lead" image. There's not really much that can be done to improve these images, especially on the scale of over 100 images, without losing the simplicity. Such, I only want to gauge the community's reaction.--HereToHelp 13:21, 16 March 2007 (UTC)

• Nominate and support. - HereToHelp 13:21, 16 March 2007 (UTC)