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Each element is detailed with the name, symbol and number of electrons in each shell. The colour scheme is designed to match that used : 21:16, 1 April 2007: 4,213 × 2,980 (4.57 MB) GregRobson == Summary == * '''Description:''' Diagram showing the periodic table of elements in the form of their electron shells.
In chemistry and atomic physics, an electron shell may be thought of as an orbit that electrons follow around an atom's nucleus.The closest shell to the nucleus is called the "1 shell" (also called the "K shell"), followed by the "2 shell" (or "L shell"), then the "3 shell" (or "M shell"), and so on further and further from the nucleus.
Hydrogen and Helium, at lowest energy, have just one electron shell. Lithium through Neon (see periodic table) have two shells: two electrons in the first shell, and up to 8 in the second shell. Larger atoms have more shells. It is one of four quantum numbers assigned to each electron in an atom to describe that electron's state.
In hydrogen, there is only one electron, which must go in the lowest-energy orbital 1s. This electron configuration is written 1s 1, where the superscript indicates the number of electrons in the subshell. Helium adds a second electron, which also goes into 1s, completely filling the first shell and giving the configuration 1s 2. [39] [58] [i]
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 2 n 2 {\displaystyle 2n^{2}} . This image combines all the diagrams into one SVG image, at the nominator's request.
Date/Time Thumbnail Dimensions User Comment; current: 10:57, 23 October 2012: 1,000 × 1,000 (2 KB): DePiep: svg from labeled file, standard setup for the whole set of unlabeled files
This page shows the electron configurations of the neutral gaseous atoms in their ground states. For each atom the subshells are given first in concise form, then with all subshells written out, followed by the number of electrons per shell. For phosphorus (element 15) as an example, the concise form is [Ne] 3s 2 3p 3.