Electron Configuration Chart for the Elements (2024)

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Electron Configurations of Atoms of Elements

Electron Configuration Chart for the Elements (1)

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By

Anne Marie Helmenstine, Ph.D.

Anne Marie Helmenstine, Ph.D.

Chemistry Expert

  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.

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See Also
Electron Configuration - Definition, Examples, Chart, and Diagram2.6: Electron ConfigurationsElectron Configuration for Potassium (K, K+ ion)6.8: Electron Configurations

Updated on February 01, 2021

The electron configurationof an atom of any element is the of electrons persublevel of the energy levels of an atom in its ground state.This handy chart compiles the electron configurations of the elements up through number 104.

Key Takeaways: Electron Configurations

  • An atom's electron configuration describes the way its electrons fill sublevels when the atom is in its ground state.
  • Atoms seek the most stable electron configuration, so sublevels are half-filled or fully-filled whenever possible.
  • Rather than writing out the whole electron configuration, scientists use a shorthand notation that starts with the symbol for the noble gas before the element on the periodic table.

How to Determine Electron Configuration

To arrive at the electron configurations of atoms, you must know the order in which the different sublevels are filled. Electrons enter available sublevels in order of their increasing energy. A sublevel is filled or half-filled before the next sublevel is entered.

For example, thessublevel can only hold two electrons, so the 1sis filled at helium (1s2). Thepsublevel can hold six electrons, thedsublevel can hold 10 electrons, and thefsublevel can hold 14 electrons. The common shorthand notation is to refer to the noble gas core, rather than write out the entire configuration. For example, the configuration of magnesium could be written [Ne]3s2, rather than writing out 1s22s22p63s2.

Electron Configuration Chart

No.ElementKLMNOPQ
1234567
ss ps p ds p d fs p d fs p d fs
1H1
2He2
3Li21
4Be22
5B22 1
6C22 2
7N22 3
8O22 4
9F22 5
10Ne22 6
11Na22 61
12Mg22 62
13Al22 62 1
14Si22 62 2
15P22 62 3
16S22 62 4
17Cl22 62 5
18Ar22 62 6
19K22 62 6 -1
20Ca22 62 6 -2
21Sc22 62 6 12
22Ti22 62 6 22
23V22 62 6 32
24Cr22 62 6 5*1
25Mn22 62 6 52
26Fe22 62 6 62
27Co22 62 6 72
28Ni22 62 6 82
29Cu22 62 6 101*
30Zn22 62 6 102
31Ga22 62 6 102 1
32Ge22 62 6 102 2
33As22 62 6 102 3
34Se22 62 6 102 4
35Br22 62 6 102 5
36Kr22 62 6 102 6
37Rb22 62 6 102 6 -1
38Sr22 62 6 102 6 -2
39Y22 62 6 102 6 12
40Zr22 62 6 102 6 22
41Nb22 62 6 102 6 4*1
42Mo22 62 6 102 6 51
43Tc22 62 6 102 6 61
44Ru22 62 6 102 6 71
45Rh22 62 6 102 6 81
46Pd22 62 6 102 6 100*
47Ag22 62 6 102 6 101
48Cd22 62 6 102 6 102
49In22 62 6 102 6 102 1
50Sn22 62 6 102 6 102 2
51Sb22 62 6 102 6 102 3
52Te22 62 6 102 6 102 4
53I22 62 6 102 6 102 5
54Xe22 62 6 102 6 102 6
55Cs22 62 6 102 6 102 6 - -1
56Ba22 62 6 102 6 102 6 - -2
57La22 62 6 102 6 10 -2 6 1 -2
58Ce22 62 6 102 6 10 2*2 6 - -2
59Pr22 62 6 102 6 10 32 6 - -2
60Nd22 62 6 102 6 10 42 6 - -2
61Pm22 62 6 102 6 10 52 6 - -2
62Sm22 62 6 102 6 10 62 6 - -2
63Eu22 62 6 102 6 10 72 6 - -2
64Gd22 62 6 102 6 10 72 6 1 -2
65Tb22 62 6 102 6 10 9*2 6 - -2
66Dy22 62 6 102 6 10 102 6 - -2
67Ho22 62 6 102 6 10 112 6 - -2
68Er22 62 6 102 6 10 122 6 - -2
69Tm22 62 6 102 6 10 132 6 - -2
70Yb22 62 6 102 6 10 142 6 - -2
71Lu22 62 6 102 6 10 142 6 1 -2
72Hf22 62 6 102 6 10 142 6 2 -2
73Ta22 62 6 102 6 10 142 6 3 -2
74W22 62 6 102 6 10 142 6 4 -2
75Re22 62 6 102 6 10 142 6 5 -2
76Os22 62 6 102 6 10 142 6 6 -2
77Ir22 62 6 102 6 10 142 6 7 -2
78Pt22 62 6 102 6 10 142 6 9 -1
79Au22 62 6 102 6 10 142 6 10 -1
80Hg22 62 6 102 6 10 142 6 10 -2
81Tl22 62 6 102 6 10 142 6 10 -2 1 - -
82Pb22 62 6 102 6 10 142 6 10 -2 2 - -
83Bi22 62 6 102 6 10 142 6 10 -2 3 - -
84Po22 62 6 102 6 10 142 6 10 -2 4 - -
85At22 62 6 102 6 10 142 6 10 -2 5 - -
86Rn22 62 6 102 6 10 142 6 10 -2 6 - -
87Fr22 62 6 102 6 10 142 6 10 -2 6 - -1
88Ra22 62 6 102 6 10 142 6 10 -2 6 - -2
89Ac22 62 6 102 6 10 142 6 10 -2 6 1 -2
90Th22 62 6 102 6 10 142 6 10 -2 6 2 -2
91Pa22 62 6 102 6 10 142 6 10 2*2 6 1 -2
92U22 62 6 102 6 10 142 6 10 32 6 1 -2
93Np22 62 6 102 6 10 142 6 10 42 6 1 -2
94Pu22 62 6 102 6 10 142 6 10 62 6 - -2
95Am22 62 6 102 6 10 142 6 10 72 6 - -2
96Cm22 62 6 102 6 10 142 6 10 72 6 1 -2
97Bk22 62 6 102 6 10 142 6 10 9*2 6 - -2
98Cf22 62 6 102 6 10 142 6 10 102 6 - -2
99Es22 62 6 102 6 10 142 6 10 112 6 - -2
100Fm22 62 6 102 6 10 142 6 10 122 6 - -2
101Md22 62 6 102 6 10 142 6 10 132 6 - -2
102No22 62 6 102 6 10 142 6 10 142 6 - -2
103Lr22 62 6 102 6 10 142 6 10 142 6 1 -2
104Rf22 62 6 102 6 10 142 6 10 142 6 2 -2

* note the irregularity

See Also
6.4 Electronic Structure of Atoms (Electron Configurations) - Chemistry 2e | OpenStax

You may also view the electron configurations of the elements on a printable periodic tableif desired.

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Your Citation

Helmenstine, Anne Marie, Ph.D. "Electron Configuration Chart." ThoughtCo, Feb. 16, 2021, thoughtco.com/electron-configuration-chart-603975.Helmenstine, Anne Marie, Ph.D. (2021, February 16). Electron Configuration Chart. Retrieved from https://www.thoughtco.com/electron-configuration-chart-603975Helmenstine, Anne Marie, Ph.D. "Electron Configuration Chart." ThoughtCo. https://www.thoughtco.com/electron-configuration-chart-603975 (accessed April 27, 2024).

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Electron Configuration Chart for the Elements (2024)
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