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1
H
1.008
2
He
4.003
3
Li
6.941
4
Be
9.012
5
B
10.811
6
C
12.011
7
N
14.007
8
O
15.999
9
F
18.998
10
Ne
20.18
11
Na
22.99
12
Mg
24.305
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
26
Fe
55.845
29
Cu
63.546
30
Zn
65.38
35
Br
79.904
47
Ag
107.868
53
I
126.904
79
Au
196.967
80
Hg
200.59
82
Pb
207.2