| периоды |
ряды |
группы элементов |
| I |
II |
III |
IV |
V |
VI |
VII |
VIII |
| I |
1 |
1
H
1,00795
|
химические элементы |
2
He
4,002602
гелий |
| II |
2 |
3
Li
6,9412
|
4
Be
9,01218
|
5
B
10,812
|
6
С
12,0108
|
7
N
14,0067
|
8
O
15,9994
|
9
F
18,99840
|
10
Ne
20,179
неон |
| III |
3 |
11
Na
22,98977
|
12
Mg
24,305
|
13
Al
26,98154
|
14
Si
28,086
|
15
P
30,97376
|
16
S
32,06
|
17
Cl
35,453
|
18
Ar
39,948
аргон |
| IV |
4 |
19
K
39,0983
|
20
Ca
40,08
|
21
Sc
44,9559
|
22
Ti
47,90
|
23
V
50,9415
|
24
Cr
51,996
|
25
Mn
54,9380
|
26
Fe
55,847
|
27
Co
58,9332
|
28
Ni
58,70
|
|
29
Cu
63,546
|
30
Zn
65,38
|
31
Ga
69,72
|
32
Ge
72,59
|
33
As
74,9216
|
34
Se
78,96
|
35
Br
79,904
|
36
Kr
83,80
криптон |
| V |
5 |
37
Rb
85,4678
|
38
Sr
87,62
|
39
Y
88,9059
|
40
Zr
91,22
|
41
Nb
92,9064
|
42
Mo
95,94
|
43
Tc
98,9062
|
44
Ru
101,07
|
45
Rh
102,9055
|
46
Pd
106,4
|
|
47
Ag
107,868
|
48
Cd
112,41
|
49
In
114,82
|
50
Sn
118,69
|
51
Sb
121,75
|
52
Te
127,60
|
53
I
126,9045
|
54
Xe
131,30
ксенон |
| VI |
6 |
55
Cs
132,9054
|
56
Ba
137,33
|
57
La
138,9
|
72
Hf
178,49
|
73
Ta
180,9479
|
74
W
183,85
|
75
Re
186,207
|
76
Os
190,2
|
77
Ir
192,22
|
78
Pt
195,09
|
|
79
Au
196,9665
|
80
Hg
200,59
|
81
Tl
204,37
|
82
Pb
207,2
|
83
Bi
208,9
|
84
Po
209
|
85
At
210
|
86
Rn
222
радон |
| VII |
7 |
87
Fr
223
|
88
Ra
226,0
|
89
Ac
227
|
104
Rf
261
|
105
Db
262
|
106
Sg
266
|
107
Bh
269
|
108
Hs
269
|
109
Mt
268
|
110
Ds
271
|
|
111
Rg
272
|
112
285
|
113
|
114
289
|
115
|
116
|
117
|
118
|
|
|
57
La
138,9
|
58
Ce
140,1
|
59
Pr
140,9
|
60
Nd
144,2
|
61
Pm
145
|
62
Sm
150,4
|
63
Eu
151,9
|
64
Gd
157,3
|
65
Tb
158,9
|
66
Dy
162,5
|
67
Ho
164,9
|
68
Er
167,3
|
69
Tm
168,9
|
70
Yb
173,0
|
71
Lu
174,9
|
|
89
Ac
227
|
90
Th
232,0
|
91
Pa
231,0
|
92
U
238,0
|
93
Np
237
|
94
Pu
244
|
95
Am
243
|
96
Cm
247
|
97
Bk
247
|
98
Cf
251
|
99
Es
252
|
100
Fm
257
|
101
Md
258
|
102
No
259
|
103
Lr
262
|
|
|