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
Vodík
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
Uhlík
C
12.01
7
Dusík
N
14.01
8
Kyslík
O
16.00
9
Fluor
F
19.00
10
Neon
Ne
20.18
3 11
Sodík
Na
23.00
12
Hořčík
Mg
24.31
13
Hliník
Al
26.98
14
Křemík
Si
28.09
15
Fosfor
P
30.97
16
Síra
S
32.07
17
Chlor
Cl
35.45
18
Argon
Ar
39.95
4 19
Draslík
K
39.10
20
Vápník
Ca
40.08
21
Skandium
Sc
44.96
22
Titan
Ti
47.89
23
Vanad
V
50.94
24
Chrom
Cr
52.00
25
Mangan
Mn
54.94
26
Železo
Fe
55.85
27
Kobalt
Co
58.93
28
Nikl
Ni
58.69
29
Měď
Cu
63.55
30
Zinek
Zn
65.39
31
Gallium
Ga
69.72
32
Germanium
Ge
72.61
33
Arzen
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
Stroncium
Sr
87.62
39
Yttrium
Y
88.91
40
Zirkonium
Zr
91.22
41
Niob
Nb
92.91
42
Molybden
Mo
95.94
43
Technecium
Tc
[99]
44
Ruthenium
Ru
101.07
45
Rhodium
Rh
102.91
46
Palladium
Pd
106.42
47
Stříbro
Ag
107.87
48
Kadmium
Cd
112.41
49
Indium
In
114.82
50
Cín
Sn
118.71
51
Antimon
Sb
121.76
52
Tellur
Te
127.60
53
Jod
I
126.90
54
Xenon
Xe
131.29
6 55
Cesium
Cs
132.91
56
Baryum
Ba
137.33
57-71
Lanthanoidy
*
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
Platina
Pt
195.08
79
Zlato
Au
196.97
80
Rtuť
Hg
200.59
81
Thallium
Tl
204.38
82
Olovo
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
Aktinoidy
**
104

Rf
[261]
105

Db
[262]
106

Sg
[263]
107

Bh
[264]
108

Hs
[269]
109

Mt
[268]
110

Ds
[269]
111

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
Lutecium
Lu
174.97

**
89
Aktinium
Ac
[227]
90
Thorium
Th
232.04
91
Protaktinium
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
Kalifornium
Cf
[252]
99
Einsteinium
Es
[252]
100
Fermium
Fm
[257]
101
Mendelevium
Md
[256]
102
Nobelium
No
[259]
103
Lawrencium
Lr
[260]