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Electronic Configurations

Shell/Subshell Table

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Listed in order of Z number and grouped by row of the Periodic Table. Quick Guide to Notation
 Shell       K
 Subshell   1s

   1  H      1 
   2  He     2 


Shell K L Subshell 1s 2s 2p 3 Li 2 1 4 Be 2 2 5 B 2 2 1 6 C 2 2 2 7 N 2 2 3 8 O 2 2 4 9 F 2 2 5 10 Ne 2 2 6
Shell K L M Subshell 1s 2s 2p 3s 3p 3d 11 Na 2 2 6 1 12 Mg 2 2 6 2 13 Al 2 2 6 2 1 14 Si 2 2 6 2 2 15 P 2 2 6 2 3 16 S 2 2 6 2 4 17 Cl 2 2 6 2 5 18 Ar 2 2 6 2 6
Shell K L M N Subshell 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 19 K 2 2 6 2 6 1 20 Ca 2 2 6 2 6 2 21 Sc 2 2 6 2 6 1 2 22 Ti 2 2 6 2 6 2 2 23 V 2 2 6 2 6 3 2 24 Cr 2 2 6 2 6 5 1 25 Mn 2 2 6 2 6 5 2 26 Fe 2 2 6 2 6 6 2 27 Co 2 2 6 2 6 7 2 28 Ni 2 2 6 2 6 8 2 29 Cu 2 2 6 2 6 10 1 30 Zn 2 2 6 2 6 10 2 31 Ga 2 2 6 2 6 10 2 1 32 Ge 2 2 6 2 6 10 2 2 33 As 2 2 6 2 6 10 2 3 34 Se 2 2 6 2 6 10 2 4 35 Br 2 2 6 2 6 10 2 5 36 Kr 2 2 6 2 6 10 2 6
Shell K L M N O Subshell 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 37 Rb 2 2 6 2 6 10 2 6 1 38 Sr 2 2 6 2 6 10 2 6 2 39 Y 2 2 6 2 6 10 2 6 1 2 40 Zr 2 2 6 2 6 10 2 6 2 2 41 Nb 2 2 6 2 6 10 2 6 4 1 42 Mo 2 2 6 2 6 10 2 6 5 1 43 Tc 2 2 6 2 6 10 2 6 6 1 44 Ru 2 2 6 2 6 10 2 6 7 1 45 Rh 2 2 6 2 6 10 2 6 8 1 46 Pd 2 2 6 2 6 10 2 6 10 47 Ag 2 2 6 2 6 10 2 6 10 1 48 Cd 2 2 6 2 6 10 2 6 10 2 49 In 2 2 6 2 6 10 2 6 10 2 1 50 Sn 2 2 6 2 6 10 2 6 10 2 2 51 Sb 2 2 6 2 6 10 2 6 10 2 3 52 Te 2 2 6 2 6 10 2 6 10 2 4 53 I 2 2 6 2 6 10 2 6 10 2 5 54 Xe 2 2 6 2 6 10 2 6 10 2 6
Shell K L M N O P Subshell 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s 6p 6d 6f 6g 6h 55 Cs 2 2 6 2 6 10 2 6 10 2 6 1 56 Ba 2 2 6 2 6 10 2 6 10 2 6 2 57 La 2 2 6 2 6 10 2 6 10 2 6 1 2 58 Ce 2 2 6 2 6 10 2 6 10 1 2 6 1 2 59 Pr 2 2 6 2 6 10 2 6 10 3 2 6 2 60 Nd 2 2 6 2 6 10 2 6 10 4 2 6 2 61 Pm 2 2 6 2 6 10 2 6 10 5 2 6 2 62 Sm 2 2 6 2 6 10 2 6 10 6 2 6 2 63 Eu 2 2 6 2 6 10 2 6 10 7 2 6 2 64 Gd 2 2 6 2 6 10 2 6 10 7 2 6 1 2 65 Tb 2 2 6 2 6 10 2 6 10 9 2 6 2 66 Dy 2 2 6 2 6 10 2 6 10 10 2 6 2 67 Ho 2 2 6 2 6 10 2 6 10 11 2 6 2 68 Er 2 2 6 2 6 10 2 6 10 12 2 6 2 69 Tm 2 2 6 2 6 10 2 6 10 13 2 6 2 70 Yb 2 2 6 2 6 10 2 6 10 14 2 6 2 71 Lu 2 2 6 2 6 10 2 6 10 14 2 6 1 2 72 Hf 2 2 6 2 6 10 2 6 10 14 2 6 2 2 73 Ta 2 2 6 2 6 10 2 6 10 14 2 6 3 2 74 W 2 2 6 2 6 10 2 6 10 14 2 6 4 2 75 Re 2 2 6 2 6 10 2 6 10 14 2 6 5 2 76 Os 2 2 6 2 6 10 2 6 10 14 2 6 6 2 77 Ir 2 2 6 2 6 10 2 6 10 14 2 6 7 2 78 Pt 2 2 6 2 6 10 2 6 10 14 2 6 9 1 79 Au 2 2 6 2 6 10 2 6 10 14 2 6 10 1 80 Hg 2 2 6 2 6 10 2 6 10 14 2 6 10 2 81 Ti 2 2 6 2 6 10 2 6 10 14 2 6 10 2 1 82 Pb 2 2 6 2 6 10 2 6 10 14 2 6 10 2 2 83 Bi 2 2 6 2 6 10 2 6 10 14 2 6 10 2 3 84 Po 2 2 6 2 6 10 2 6 10 14 2 6 10 2 4 85 At 2 2 6 2 6 10 2 6 10 14 2 6 10 2 5 86 Rn 2 2 6 2 6 10 2 6 10 14 2 6 10 2 6
Shell K L M N O P Q Subshell 1s 2s 2p 3s 3p 3d 4s 4p 4d 4f 5s 5p 5d 5f 5g 6s 6p 6d 6f 6g 6h 7s 7p 87 Fr 2 2 6 2 6 10 2 6 10 14 2 6 10 2 6 1 88 Ra 2 2 6 2 6 10 2 6 10 14 2 6 10 2 6 2 89 Ac 2 2 6 2 6 10 2 6 10 14 2 6 10 2 6 1 2 90 Th 2 2 6 2 6 10 2 6 10 14 2 6 10 2 6 2 2 91 Pa 2 2 6 2 6 10 2 6 10 14 2 6 10 2 2 6 1 2 92 U 2 2 6 2 6 10 2 6 10 14 2 6 10 3 2 6 1 2 93 Np 2 2 6 2 6 10 2 6 10 14 2 6 10 4 2 6 1 2 94 Pu 2 2 6 2 6 10 2 6 10 14 2 6 10 6 2 6 2 95 Am 2 2 6 2 6 10 2 6 10 14 2 6 10 7 2 6 2 96 Cm 2 2 6 2 6 10 2 6 10 14 2 6 10 7 2 6 1 2 97 Bk 2 2 6 2 6 10 2 6 10 14 2 6 10 9 2 6 2 98 Cf 2 2 6 2 6 10 2 6 10 14 2 6 10 10 2 6 2 99 Es 2 2 6 2 6 10 2 6 10 14 2 6 10 11 2 6 2 100 Fm 2 2 6 2 6 10 2 6 10 14 2 6 10 12 2 6 2 101 Md 2 2 6 2 6 10 2 6 10 14 2 6 10 13 2 6 2 102 No 2 2 6 2 6 10 2 6 10 14 2 6 10 14 2 6 2 103 Lr 2 2 6 2 6 10 2 6 10 14 2 6 10 14 2 6 2 1 104 Rf 2 2 6 2 6 10 2 6 10 14 2 6 10 14 2 6 2 2 105 Db 2 2 6 2 6 10 2 6 10 14 2 6 10 14 2 6 3 2 106 Sg 2 2 6 2 6 10 2 6 10 14 2 6 10 14 2 6 4 2

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NOTATIONS

Princ. Quantum Number, n:  1  2  3  4  5  6  ...
                   Shell:  K  L  M  N  O  P  ...


Max. Orbital Quantum Number, l:   0  1  2  3  4  5  ...
                      Subshell:   s  p  d  f  g  h  ...
    Max. electrons in, 2(2l+1):   2  6  10 14 18 22 ...


Full Notation
                 n:   1    2    2    2    3    3    3    3    3    ...
                 l:   0    0    1    1    0    1    1    2    2    ...
           spin, s:   1/2  1/2  1/2  1/2  1/2  1/2  1/2  1/2  1/2  ...
          l + s, j:   1/2  1/2  1/2  3/2  1/2  1/2  3/2  3/2  5/2  ...
    X-ray Notation:   K    L1   L2   L3   M1   M2   M3   M4   M5   ...
electrons in, 2j+1:   2    2    2    4    2    2    4    4    6    ...

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Created: November 6, 1998 --- Last Updated: April 6, 1999
By Mark D. Pauli