6.3: Electron Configuration
- Page ID
- 371713
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)Electron Configuration
John Moore, Jia Zhou, and Etienne Garand
Ground State Electron Configuration of Atoms
| Atomic No. | Element | Configuration |
|---|---|---|
| 1 | H | 1s¹ |
| 2 | He | 1s² |
| 3 | Li | [He] 2s¹ |
| 4 | Be | [He] 2s² |
| 5 | B | [He] 2s²2p¹ |
| 6 | C | [He] 2s²2p² |
| 7 | N | [He] 2s²2p³ |
| 8 | O | [He] 2s²2p⁴ |
| 9 | F | [He] 2s²2p⁵ |
| 10 | Ne | [He] 2s²2p⁶ |
| 11 | Na | [Ne] 3s¹ |
| 12 | Mg | [Ne] 3s² |
| 13 | Al | [Ne] 3s²3p¹ |
| 14 | Si | [Ne] 3s²3p² |
| 15 | P | [Ne] 3s²3p³ |
| 16 | S | [Ne] 3s²3p⁴ |
| 17 | Cl | [Ne] 3s²3p⁵ |
| 18 | Ar | [Ne] 3s²3p⁶ |
| 19 | K | [Ar] 4s¹ |
| 20 | Ca | [Ar] 4s² |
| 21 | Sc | [Ar] 3d¹4s² |
| 22 | Ti | [Ar] 3d²4s² |
| 23 | V | [Ar] 3d³4s² |
| 24 | Cr | [Ar] 3d⁵4s¹ |
| 25 | Mn | [Ar] 3d⁵4s² |
| 26 | Fe | [Ar] 3d⁶4s² |
| 27 | Co | [Ar] 3d⁷4s² |
| 28 | Ni | [Ar] 3d⁸4s² |
| 29 | Cu | [Ar] 3d¹⁰4s¹ |
| 30 | Zn | [Ar] 3d¹⁰4s² |
| 31 | Ga | [Ar] 3d¹⁰4s²4p¹ |
| 32 | Ge | [Ar] 3d¹⁰4s²4p² |
| 33 | As | [Ar] 3d¹⁰4s²4p³ |
| 34 | Se | [Ar] 3d¹⁰4s²4p⁴ |
| 35 | Br | [Ar] 3d¹⁰4s²4p⁵ |
| 36 | Kr | [Ar] 3d¹⁰4s²4p⁶ |
| 37 | Rb | [Kr] 5s¹ |
| 38 | Sr | [Kr] 5s² |
| 39 | Y | [Kr]4d¹5s² |
| 40 | Zr | [Kr] 4d²5s² |
| 41 | Nb | [Kr] 4d⁴5s¹ |
| 42 | Mo | [Kr] 4d⁵5s¹ |
| 43 | Tc | [Kr] 4d⁵5s² |
| 44 | Ru | [Kr] 4d⁷5s¹ |
| 45 | Rh | [Kr] 4d⁸5s¹ |
| 46 | Pd | [Kr] 4d¹⁰ |
| 47 | Ag | [Kr] 4d¹⁰5s¹ |
| 48 | Cd | [Kr] 4d¹⁰5s² |
| 49 | In | [Kr] 4d¹⁰5s²5p¹ |
| 50 | Sn | [Kr] 4d¹⁰5s²5p² |
| 51 | Sb | [Kr] 4d¹⁰5s²5p³ |
| 52 | Te | [Kr] 4d¹⁰5s²5p⁴ |
| 53 | I | [Kr] 4d¹⁰5s²5p⁵ |
| 54 | Xe | [Kr] 4d¹⁰5s²5p⁶ |
| 55 | Cs | [Xe] 6s¹ |
| 56 | Ba | [Xe] 6s² |
| 57 | La | [Xe] 5d¹6s² |
| 58 | Ce | [Xe] 4f¹5d¹6s² |
| 59 | Pr | [Xe] 4f³6s² |
| 60 | Nd | [Xe] 4f⁴6s² |
| 61 | Pm | [Xe] 4f⁵6s² |
| 62 | Sm | [Xe] 4f⁶6s² |
| 63 | Eu | [Xe] 4f⁷6s² |
| 64 | Gd | [Xe] 4f⁷5d¹6s² |
| 65 | Tb | [Xe] 4f⁹6s² |
| 66 | Dy | [Xe] 4f¹⁰6s² |
| 67 | Ho | [Xe] 4f¹¹6s² |
| 68 | Er | [Xe] 4f¹²6s² |
| 69 | Tm | [Xe] 4f¹³6s² |
| 70 | Yb | [Xe] 4f¹⁴6s² |
| 71 | Lu | [Xe] 4f¹⁴5d¹6s² |
| 72 | Hf | [Xe] 4f¹⁴5d²6s² |
| 73 | Ta | [Xe] 4f¹⁴5d³6s² |
| 74 | W | [Xe] 4f¹⁴5d⁴6s² |
| 75 | Re | [Xe] 4f¹⁴5d⁵6s² |
| 76 | Os | [Xe] 4f¹⁴5d⁶6s² |
| 77 | Ir | [Xe] 4f¹⁴5d⁷6s² |
| 78 | Pt | [Xe] 4f¹⁴5d⁹6s¹ |
| 79 | Au | [Xe] 4f¹⁴5d¹⁰6s¹ |
| 80 | Hg | [Xe] 4f¹⁴5d¹⁰6s² |
| 81 | Tl | [Xe] 4f¹⁴5d¹⁰6s²6p¹ |
| 82 | Pb | [Xe] 4f¹⁴5d¹⁰6s²6p² |
| 83 | Bi | [Xe] 4f¹⁴5d¹⁰6s²6p³ |
| 84 | Po | [Xe] 4f¹⁴5d¹⁰6s²6p⁴ |
| 85 | At | [Xe] 4f¹⁴5d¹⁰6s²6p⁵ |
| 86 | Rn | [Xe] 4f¹⁴5d¹⁰6s²6p⁶ |
| 87 | Fr | [Rn] 7s¹ |
| 88 | Ra | [Rn] 7s² |
| 89 | Ac | [Rn] 6d¹7s² |
| 90 | Th | [Rn] 6d²7s² |
| 91 | Pa | [Rn] 5f²6d¹7s² |
| 92 | U | [Rn] 5f³6d¹7s² |
| 93 | Np | [Rn] 5f⁴6d¹7s² |
| 94 | Pu | [Rn] 5f⁶7s² |
| 95 | Am | [Rn] 5f⁷7s² |
| 96 | Cm | [Rn] 5f⁷6d¹7s² |
| 97 | Bk | [Rn] 5f⁹7s² |
| 98 | Cf | [Rn] 5f¹⁰7s² |
| 99 | Es | [Rn] 5f¹¹7s² |
| 100 | Fm | [Rn] 5f¹²7s² |
| 101 | Md | [Rn] 5f¹³7s² |
| 102 | No | [Rn] 5f¹⁴7s² |
| 103 | Lr | [Rn] 5f¹⁴7s²7p¹ |
| 104 | Rf | [Rn] 5f¹⁴6d²7s² |
| 105 | Db | [Rn] 5f¹⁴6d³7s² |
| 106 | Sg | [Rn] 5f¹⁴6d⁴7s² |
| 107 | Bh | [Rn] 5f¹⁴6d⁵7s² |
| 108 | Hs | [Rn] 5f¹⁴6d⁶7s² |
| 109 | Mt | [Rn] 5f¹⁴6d⁷7s² |
| 110 | Ds | [Rn] 5f¹⁴6d⁹7s¹ |
| 111 | Rg | [Rn] 5f¹⁴6d¹⁰7s¹ |
| 112 | Cn | [Rn] 5f¹⁴6d¹⁰7s² |
| 113 | — | [Rn] 5f¹⁴6d²7s²7p¹ |
| 114 | Fl | [Rn] 5f¹⁴6d²7s²7p² |
| 115 | — | [Rn] 5f¹⁴6d²7s²7p³ |
| 116 | Lv | [Rn] 5f¹⁴6d²7s²7p⁴ |
| 117 | — | [Rn] 5f¹⁴6d¹⁰7s²7p⁵ |
| 118 | — | [Rn] 5f¹⁴6d¹⁰7s²7p⁶ |
All electron configurations in this table are from experimental determinations except for elements 103-118, which are predicted theoretically. For elements 103-118, only a few atoms can be produced at a time and it is very difficult to determine electron configurations.