Periodic table (electron configurations)

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Electron configurations of the neutral gaseous atoms in the ground state.

1s:

1 H 1

2 He 2

[He] + 2s: 2p:

3 Li 1 -

4 Be 2 -

5 B 2 1

6 C 2 2

7 N 2 3

8 O 2 4

9 F 2 5

10 Ne 2 6

[Ne] + 3s: 3p:

11 Na 1 -

12 Mg 2 -

13 Al 2 1

14 Si 2 2

15 P 2 3

16 S 2 4

17 Cl 2 5

18 Ar 2 6

[Ar] + 3d: 4s: 4p:

19 K - 1 -

20 Ca - 2 -

21 Sc 1 2 -

22 Ti 2 2 -

23 V 3 2 -

24 Cr 5 1 -

25 Mn 5 2 -

26 Fe 6 2 -

27 Co 7 2 -

28 Ni 8 2 -

29 Cu 10 1 -

30 Zn 10 2 -

31 Ga 10 2 1

32 Ge 10 2 2

33 As 10 2 3

34 Se 10 2 4

35 Br 10 2 5

36 Kr 10 2 6

[Kr] + 4d: 5s: 5p:

37 Rb - 1 -

38 Sr - 2 -

39 Y 1 2 -

40 Zr 2 2 -

41 Nb 4 1 -

42 Mo 5 1 -

43 Tc 5 2 -

44 Ru 7 1 -

45 Rh 8 1 -

46 Pd 10 - -

47 Ag 10 1 -

48 Cd 10 2 -

49 In 10 2 1

50 Sn 10 2 2

51 Sb 10 2 3

52 Te 10 2 4

53 I 10 2 5

54 Xe 10 2 6

[Xe] + 4f: 5d: 6s: 6p:

55 Cs - - 1 -

56 Ba - - 2 -

57 La - 1 2 -

58 Ce 1 1 2 -

59 Pr 3 - 2 -

60 Nd 4 - 2 -

61 Pm 5 - 2 -

62 Sm 6 - 2 -

63 Eu 7 - 2 -

64 Gd 7 1 2 -

65 Tb 9 - 2 -

66 Dy 10 - 2 -

67 Ho 11 - 2 -

68 Er 12 - 2 -

69 Tm 13 - 2 -

70 Yb 14 - 2 -

71 Lu 14 1 2 -

72 Hf 14 2 2 -

73 Ta 14 3 2 -

74 W 14 4 2 -

75 Re 14 5 2 -

76 Os 14 6 2 -

77 Ir 14 7 2 -

78 Pt 14 9 1 -

79 Au 14 10 1 -

80 Hg 14 10 2 -

81 Tl 14 10 2 1

82 Pb 14 10 2 2

83 Bi 14 10 2 3

84 Po 14 10 2 4

85 At 14 10 2 5

86 Rn 14 10 2 6

[Rn] + 5f: 6d: 7s: 7p:

87 Fr - - 1 -

88 Ra - - 2 -

89 Ac - 1 2 -

90 Th - 2 2 -

91 Pa 2 1 2 -

92 U 3 1 2 -

93 Np 4 1 2 -

94 Pu 6 - 2 -

95 Am 7 - 2 -

96 Cm 7 1 2 -

97 Bk 9 - 2 -

98 Cf 10 - 2 -

99 Es 11 - 2 -

100 Fm 12 - 2 -

101 Md 13 - 2 -

102 No 14 - 2 -

103 Lr 14 - 2 1

104 Rf 14 2 2 -

105 Db

106 Sg

107 Bh

108 Hs

109 Mt

110 Ds

111 Rg

112 Uub

113 Uut

114 Uuq

115 Uup

116 Uuh

117 Uus

118 Uuo

Template:Element color legend

• Grayed out electron numbers indicate subshells that are filled to their maximum.
• Configurations of elements with light gray background are uncertain or not available.

Configurations that are unavailable are guessed to be similar to the element directly above on the Periodic Table.

• The bracketed noble gas symbols on the left represent the inner configurations that are the same in each period. Written out these are:

He, 2, helium : 1s²

Ne, 10, neon : 1s² 2s² 2p⁶

Ar, 18, argon : 1s² 2s² 2p⁶ 3s² 3p⁶

Kr, 36, krypton : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶

Xe, 54, xenon : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶

Rn, 86, radon : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁶

References

electron configurations of the elements (data page)

Periodic tables
Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks
Lists of elements
Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass
Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block

ar:جدول دوري (توزيع إلكتروني)

th:ตารางธาตุ (การจัดเรียงอิเล็กตรอน)