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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

15.9994
9
F

18.998
10
Ne

20.1797
11
Na

22.989
12
Mg

24.305
13
Al

26.982
14
Si

28.086
15
P

30.974
16
S

32.066
17
Cl

35.453
18
Ar

39.948
19
K

39.0983
20
Ca

40.078
21
Sc

44.956
22
Ti

47.867
23
V

50.9415
24
Cr

51.996
25
Mn

54.938
26
Fe

55.847
27
Co

58.933
28
Ni

58.69
29
Cu

63.546
30
Zn

65.39
31
Ga

69.723
32
Ge

72.61
33
As

74.922
34
Se

78.96
35
Br

79.904
36
Kr

83.8
37
Rb

85.4678
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

102.906
46
Pd

106.42
47
Ag

107.8682
48
Cd

112.411
49
In

114.82
50
Sn

118.71
51
Sb

121.75
52
Te

127.6
53
I

126.905
54
Xe

131.293
55
Cs

132.905
56
Ba

137.327
72
Hf

178.49
73
Ta

180.948
74
W

183.85
75
Re

186.207
76
Os

190.23
77
Ir

192.22
78
Pt

195.08
79
Au

196.967
80
Hg

200.59
81
Tl

204.3833
82
Pb

207.2
83
Bi

208.98
84
Po

209
85
At

210
86
Rn

222
87
Fr

223
88
Ra

226.025
0
Rf

0
0
Db

0
0
Sg

0
0
Bh

0
0
Hs

0
0
Mt

0
0
Ds

0
0
Rg

0
0
Cn

0
0
Uut

0
0
Fl

0
0
Uup

0
0
Lv

0
0
Uus

0
0
Uuo

0
57
La

138.906
58
Ce

140.115
59
Pr

140.908
60
Nd

144.24
61
Pm

145
62
Sm

150.36
63
Eu

151.965
64
Gd

157.25
65
Tb

158.925
66
Dy

162.5
67
Ho

164.93
68
Er

167.26
69
Tm

168.934
70
Yb

173.04
71
Lu

174.967
89
Ac

227.028
90
Th

232.038
91
Pa

231.036
92
U

238.029
93
Np

237.048
94
Pu

244
95
Am

243
96
Cm

247
97
Bk

247
98
Cf

251
99
Es

252.083
100
Fm

257.0951
0
Md

0
0
No

0
0
Lr

0

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