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Electron configuration


Electron configuration? Definition and table ...

The electron configuration indicates the arrangement or distribution of electrons in an atom.
The figure on the right shows schematically the electron shell of sodium. The following electron configuration results for sodium: Ne 3s1
This spelling is already shortened. The noble gas with the next lower atomic number (sodium with the atomic number 11, thus neon with the atomic number 10) is prefixed to the electron configuration. This indicates that the same shells are occupied by the same number of electrons in sodium as is the case with neon. In addition, the sodium atom in the third shell contains another electron. However, the 's' here does not stand for 'shell', but for the orbital in which the electron resides. In addition to the s orbital, the p orbital, d orbital and f orbital are also relevant for scholastic purposes (see also: block of the periodic table).
The occupation of the orbitals by electrons takes place in this order:

List / Table of Electron Configurations:

ordinalChem. Elementelectron configuration
1hydrogen1s1
2helium1s2
3lithiumHey 2s1
4berylliumHey 2s2
5boronHey 2s2 2p1
6carbonHey 2s2 2p2
7nitrogenHey 2s2 2p3
8oxygenHey 2s2 2p4
9fluorineHey 2s2 2p5
10neonHey 2s2 2p6
11sodiumNe 3s1
12magnesiumNe 3s2
13aluminumNe 3s2 3p1
14siliconNe 3s2 3p2
15phosphorusNe 3s2 3p3
16sulfurNe 3s2 3p4
17chlorineNe 3s2 3p5
18argonNe 3s2 3p6
19potassiumAr 4s1
20calciumAr 4s2
21scandiumAr 3d1 4s2
22titaniumAr 3d2 4s2
23vanadiumAr 3d3 4s2
24chromeAr 3d5 4s1
25manganeseAr 3d5 4s2
26ironAr 3d6 4s2
27cobaltAr 3d7 4s2
28nickelAr 3d8 4s2
29copperAr 3d10 4s1
30zincAr 3d10 4s2
31galliumAr 3d10 4s2 4p1
32germaniumAr 3d10 4s2 4p2
33arsenicAr 3d10 4s2 4p3
34seleniumAr 3d10 4s2 4p4
35bromineAr 3d10 4s2 4p5
36kryptonAr 3d10 4s2 4p6
37rubidiumKr 5s1
38strontiumKr 5s2
39yttriumKr 4d1 5s2
40zirconiumKr 4d2 5s2
41niobiumKr 4d4 5s1
42molybdenumKr 4d5 5s1
43technetiumKr 4d6 5s1
44rutheniumKr 4d7 5s1
45rhodiumKr 4d8 5s1
46palladiumKr 4d10
47silverKr 4d10 5s1
48cadmiumKr 4d10 5s2
49indiumKr 4d10 5s2 5p1
50tinKr 4d10 5s2 5p2
51antimonyKr 4d10 5s2 5p3
52telluriumKr 4d10 5s2 5p4
53iodineKr 4d10 5s2 5p5
54xenonKr 4d10 5s2 5p6
55cesiumXe 6s1
56bariumXe 6s2
57lanthanumXe 5d1 6s2
58ceriumXe 4f2 6s2
59praseodymiumXe 4f3 6s2
60neodymiumXe 4f4 6s2
61promethiumXe 4f5 6s2
62samariumXe 4f6 6s2
63europiumXe 4f7 6s2
64gadoliniumXe 4f7 5d1 6s2
65terbiumXe 4f9 6s2
66dysprosiumXe 4f10 6s2
67holmiumXe 4f11 6s2
68erbiumXe 4f12 6s2
69thuliumXe 4f13 6s2
70ytterbiumXe 4f14 6s2
71lutetiumXe 4f14 5d1 6s2
72hafniumXe 4f14 5d2 6s2
73tantalumXe 4f14 5d3 6s2
74tungstenXe 4f14 5d4 6s2
75rheniumXe 4f14 5d5 6s2
76osmiumXe 4f14 5d6 6s2
77iridiumXe 4f14 5d7 6s2
78platinumXe 4f14 5d9 6s1
79goldXe 4f14 5d10 6s1
80mercuryXe 4f14 5d10 6s2
81thalliumXe 4f14 5d10 6s2 6p1
82leadXe 4f14 5d10 6s2 6p2
83bismuthXe 4f14 5d10 6s2 6p3
84poloniumXe 4f14 5d10 6s2 6p4
85astatineXe 4f14 5d10 6s2 6p5
86radonXe 4f14 5d10 6s2 6p6
87franciumRn 7s1
88radiumRn 7s2
89actiniumRn 6d1 7s2
90thoriumRn 6d2 7s2
91protactiniumRn 5f2 6d1 7s2
92uraniumRn 5f3 6d1 7s2
93neptuniumRn 5f4 6d1 7s2
94plutoniumRn 5f6 7s2
95americiumRn 5f7 7s2
96CuriumRn 5f7 6d1 7s2
97BerkeliumRn 5f9 7s2
98californiumRn 5f10 7s2
99EinsteiniumRn 5f11 7s2
100fermiumRn 5f12 7s2
101mendeleviumRn 5f13 7s2
102nobeliumRn 5f14 7s2
103lawrenciumRn 5f14 6d1 7s2
104rutherfordiumRn 5f14 6d2 7s2
105DubniumRn 5f14 6d3 7s2
106seaborgiumRn 5f14 6d4 7s2
107BohriumRn 5f14 6d5 7s2
108HassiumRn 5f14 6d6 7s2
109MeitneriumRn 5f14 6d7 7s2
110darmstadtiumRn 5f14 6d9 7s1
111RoentgeniumRn 5f14 6d10 7s1
112CoperniciumRn 5f14 6d10 7s2
113UnuntriumRn 5f14 6d10 7s2 7p1
114FleroviumRn 5f14 6d10 7s2 7p2
115UnunpentiumRn 5f14 6d10 7s2 7p3
116LivermoriumRn 5f14 6d10 7s2 7p4
117UnunseptiumRn 5f14 6d10 7s2 7p5
118UnunoctiumRn 5f14 6d10 7s2 7p6