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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.
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.
An electron shell is the set of allowed states that share the same principal quantum number, n, that electrons may occupy. In each term of an electron configuration, n is the positive integer that precedes each orbital letter (helium's electron configuration is 1s 2, therefore n = 1, and the orbital contains two
This image is a derivative work of the following images: File:Electron_shell_013_Aluminium.svg licensed with Cc-by-sa-2.0-uk . 2006-04-17T16:53:44Z File Upload Bot (Pumbaa80) 800x860 (2032 Bytes) * '''Description:''' Electron shell diagram for Aluminium, the 13th element in the periodic table of elements.
Electron shell An aluminium atom has 13 electrons, arranged in an electron configuration of [ Ne ] 3s 2 3p 1 , [ 20 ] with three electrons beyond a stable noble gas configuration. Accordingly, the combined first three ionization energies of aluminium are far lower than the fourth ionization energy alone. [ 21 ]
Date/Time Thumbnail Dimensions User Comment; current: 16:53, 17 April 2006: 800 × 860 (2 KB): File Upload Bot (Pumbaa80) * '''Description:''' Electron shell diagram for Aluminium, the 13th element in the periodic table of elements.
Such an atom has the following electron configuration: s 2 p 5; this requires only one additional valence electron to form a closed shell. To form an ionic bond, a halogen atom can remove an electron from another atom in order to form an anion (e.g., F −, Cl −, etc.). To form a covalent bond, one electron from the halogen and one electron ...
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.