| Gruppe | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
| CAS-Gruppe | I A | II A | III B | IV B | V B | VI B | VII B | ||||||||||||
| Periode | Schale | ||||||||||||||||||
| 1 | 1 H Wasserstoff1,0079 1 Elektron 1 Proton 2,1 | 2 He Helium 2 2 2 |
K | ||||||||||||||||
| 2 | 3 Li |
4 Be |
5 B |
6 C |
7 N |
8 O Oxygenium Sauerstoff |
9 F |
10 Ne |
L | ||||||||||
| 3 | 11 Na Natrium |
12 Mg |
13 Al |
14 Si |
15 P |
16 S Schwefel |
17 Cl |
18 Ar |
M | ||||||||||
| 4 | 19 K Kalium |
20 Ca |
21 Sc |
22 Ti |
23 V |
24 Cr |
25 Mn |
26 Fe |
27 Co |
28 Ni |
29 Cu |
30 Zn |
31 Ga |
32 Ge |
33 As |
34 Se |
35 Br |
36 Kr |
N |
| 5 | 37 Rb |
38 Sr |
39 Y |
40 Zr |
41 Nb |
42 Mo |
43 Tc |
44 Ru |
45 Rh |
46 Pd |
47 Ag |
48 Cd |
49 In |
50 Sn |
51 Sb |
52 Te |
53 I Iod |
54 Xe |
O |
| 6 | 55 Cs |
56 Ba |
* | 72 Hf |
73 Ta |
74 W |
75 Re |
76 Os |
77 Ir |
78 Pt |
79 Au |
80 Hg |
81 Tl |
82 Pb |
83 Bi |
84 Po |
85 At |
86 Rn |
P |
| 7 | 87 Fr |
88 Ra |
** | 104 Rf |
105 Db |
106 Sg |
107 Bh |
108 Hs |
109 Mt |
110 Ds |
111 Rg |
112 Cn |
113 Uut |
114 Fl |
115 Uup |
116 Lv |
117 Uus |
118 Uuo |
Q |