Îòêðûòèå
Äî 1800 1800 - 1849 1850 - 1899 1900 - 1949 1950 - 1999 Ïîñëå 1999

1             18
1
H
1.0079
2 13 14 15 16 17 2
He
4.0026
3
Li
6.941
4
Be
9.0122
5
B
10.811
6
C
12.011
7
N
14.007
8
O
15.999
9
F
18.998
10
Ne
20.180
11
Na
22.990
12
Mg
24.305
3 4 5 6 7 8 9 10 11 12 13
Al
26.982
14
Si
28.086
15
P
30.974
16
S
32.065
17
Cl
35.453
18
Ar
39.948
19
K
39.098
20
Ca
40.078
21
Sc
44.956
22
Ti
47.867
23
V
50.942
24
Cr
51.996
25
Mn
54.938
26
Fe
55.845
27
Co
58.933
28
Ni
58.693
29
Cu
63.546
30
Zn
65.409
31
Ga
69.723
32
Ge
72.64
33
As
74.922
34
Se
78.96
35
Br
79.904
36
Kr
83.798
37
Rb
85.468
38
Sr
87.62
39
Y
88.906
40
Zr
91.224
41
Nb
92.906
42
Mo
95.94
43
Tc
[98]
44
Ru
101.07
45
Rh
102.91
46
Pd
106.42
47
Ag
107.87
48
Cd
112.41
49
In
114.82
50
Sn
118.71
51
Sb
121.76
52
Te
127.60
53
I
126.90
54
Xe
131.29
55
Cs
132.91
56
Ba
137.33
57-71 72
Hf
178.49
73
Ta
180.95
74
W
183.84
75
Re
186.21
76
Os
190.23
77
Ir
192.22
78
Pt
195.08
79
Au
196.97
80
Hg
200.59
81
Tl
204.38
82
Pb
207.2
83
Bi
208.98
84
Po
[209]
85
At
[210]
86
Rn
[222]
87
Fr
[223]
88
Ra
[226]
89-103 104
Rf
[261]
105
Db
[262]
106
Sg
[266]
107
Bh
[264]
108
Hs
[277]
109
Mt
[268]
110
Ds
[271]
111
Rg
[272]
112
Cn
[277]
113 114 115 116 117 118
                                   
    57
La
138.91
58
Ce
140.12
59
Pr
140.91
60
Nd
144.24
61
Pm
[145]
62
Sm
150.36
63
Eu
151.96
64
Gd
157.25
65
Tb
158.93
66
Dy
162.50
67
Ho
164.93
68
Er
167.26
69
Tm
168.93
70
Yb
173.04
71
Lu
174.97
 
    89
Ac
[227]
90
Th
232.04
91
Pa
231.04
92
U
238.03
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]
 
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