Element Periods (old)

1
2
He
3
Li
4
Be
5
6
7
8
9
10
Ne
11
Na
12
Mg
13
Al
14
Si
15
16
17
Cl
18
Ar
19
20
Ca
21
Sc
22
Ti
23
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
37
Rb
38
Sr
39
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
54
Xe
55
Cs
56
Ba
71
Lu
72
Hf
73
Ta
74
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
87
Fr
88
Ra
103
Lr
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
110
111
111
112
112
113
113
114
114
115
115
116
116
117
117
118
118
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Td
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
89
Ac
90
Th
91
Pa
92
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No


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