Periodic Table
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1 |
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2
He
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|
3 |
4 |
|
|
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|
|
|
|
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5
|
6 |
7 |
8 |
9 |
10 |
|
11 Na |
12 |
|
|
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|
|
|
|
|
|
|
13
|
14 |
15 |
16 |
17 |
18 |
|
19 |
20 |
21
|
22 |
23 |
24 |
25
|
26 |
27
|
28
|
29
|
30 |
31
|
32 |
33
|
34
|
35 |
36 |
37
|
38 |
39
|
40
|
41
|
42
|
43
|
44
|
45 |
46
|
47
|
48
|
49
|
50 |
51
|
52
|
53 |
54 |
|
55 |
56 |
57 |
72
|
73 |
74
|
75 |
76 |
77 |
78 |
79
|
80
|
81
|
82
|
83 |
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|
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