IA IIA IIIA IVA VA VIA VIIA VIII IB IIB IIIB IVB VB VIB VIIB 0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 1
Wasserstoff
H
1.01
2
Helium
He
4.00
2 3
Lithium
Li
6.94
4
Beryllium
Be
9.01
5
Bor
B
10.81
6
Kohlenstoff
C
12.01
7
Stickstoff
N
14.01
8
Sauerstoff
O
16.00
9
Fluor
F
19.00
10
Neon
Ne
20.18
3 11
Natrium
Na
23.00
12
Magnesium
Mg
24.31
13
Aluminium
Al
26.98
14
Silicium
Si
28.09
15
Phosphor
P
30.97
16
Schwefel
S
32.07
17
Chlor
Cl
35.45
18
Argon
Ar
39.95
4 19
Kalium
K
39.10
20
Calcium
Ca
40.08
21
Scandium
Sc
44.96
22
Titan
Ti
47.89
23
Vanadium
V
50.94
24
Chrom
Cr
52.00
25
Mangan
Mn
54.94
26
Eisen
Fe
55.85
27
Cobalt
Co
58.93
28
Nickel
Ni
58.69
29
Kupfer
Cu
63.55
30
Zink
Zn
65.39
31
Gallium
Ga
69.72
32
Germanium
Ge
72.61
33
Arsen
As
74.92
34
Selen
Se
78.96
35
Brom
Br
79.90
36
Krypton
Kr
83.80
5 37
Rubidium
Rb
85.48
38
Strontium
Sr
87.62
39
Yttrium
Y
88.91
40
Zirconium
Zr
91.22
41
Niob
Nb
92.91
42
Molybdän
Mo
95.94
43
Technetium
Tc
[99]
44
Ruthenium
Ru
101.07
45
Rhodium
Rh
102.91
46
Palladium
Pd
106.42
47
Silber
Ag
107.87
48
Cadmium
Cd
112.41
49
Indium
In
114.82
50
Zinn
Sn
118.71
51
Antimon
Sb
121.76
52
Tellur
Te
127.60
53
Iod
I
126.90
54
Xenon
Xe
131.29
6 55
Caesium
Cs
132.91
56
Barium
Ba
137.33
57-71
Lanthanoide
*
72
Hafnium
Hf
178.49
73
Tantal
Ta
180.95
74
Wolfram
W
183.84
75
Rhenium
Re
186.21
76
Osmium
Os
190.23
77
Iridium
Ir
192.22
78
Platin
Pt
195.08
79
Gold
Au
196.97
80
Quecksilber
Hg
200.59
81
Thallium
Tl
204.38
82
Blei
Pb
207.21
83
Bismut
Bi
208.98
84
Polonium
Po
[210]
85
Astat
At
[210]
86
Radon
Rn
[222]
7 87
Francium
Fr
[223]
88
Radium
Ra
[226]
89-103
Actinoide
**
104
Rutherfordium
Rf
[261]
105
Dubnium
Db
[262]
106
Seaborgium
Sg
[263]
107
Bohrium
Bh
[264]
108
Hassium
Hs
[269]
109
Meitnerium
Mt
[268]
110
Darmstadtium
Ds
[269]
111
Roentgenium
Rg
[272]

*
57
Lanthan
La
138.91
58
Cer
Ce
140.12
59
Praseodym
Pr
140.91
60
Neodym
Nd
144.24
61
Promethium
Pm
[145]
62
Samarium
Sm
150.36
63
Europium
Eu
151.97
64
Gadolinium
Gd
157.25
65
Terbium
Tb
158.93
66
Dysprosium
Dy
162.50
67
Holmium
Ho
164.93
68
Erbium
Er
167.26
69
Thulium
Tm
168.93
70
Ytterbium
Yb
173.04
71
Lutetium
Lu
174.97

**
89
Actinium
Ac
[227]
90
Thorium
Th
232.04
91
Protactinium
Pa
231.04
92
Uran
U
238.03
93
Neptunium
Np
[237]
94
Plutonium
Pu
[239]
95
Americium
Am
[243]
96
Curium
Cm
[247]
97
Berkelium
Bk
[247]
98
Californium
Cf
[252]
99
Einsteinium
Es
[252]
100
Fermium
Fm
[257]
101
Mendelevium
Md
[256]
102
Nobelium
No
[259]
103
Lawrencium
Lr
[260]