1
2
3
4
5
6
7
8
9
10
11
12
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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
H
He
Li
Be
B
C
N
O
F
Ne
Na
Mg
Al
Si
P
S
Cl
Ar
K
Ca
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Ga
Ge
As
Se
Br
Kr
Rb
Sr
Y
Zr
Nb
Mo
Tc
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
Te
I
Xe
Cs
Ba
Hf
Ta
W
Re
Os
Ir
Pt
Au
Hg
Tl
Pb
Bi
Po
At
Rn
Fr
Ra
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
Cn
Nh
Fl
Mc
Lv
Ts
Og
La
Ce
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Ho
Er
Tm
Yb
Lu
Ac
Th
Pa
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr
1.008
4.003
6.941
9.012
10.811
12.011
14.007
15.999
18.998
20.18
22.99
24.305
26.982
28.085
30.974
32.065
35.453
39.948
39.098
40.078
44.956
47.867
50.941
51.996
54.938
55.845
58.933
58.693
63.546
65.38
69.723
72.64
74.922
78.96
79.904
83.798
85.468
87.62
88.906
91.224
92.906
95.96
98
101.07
102.906
106.42
107.868
112.411
114.818
118.71
121.76
127.6
126.904
131.293
132.905
137.327
178.49
180.948
183.84
186.207
190.23
192.217
195.084
196.967
200.59
204.383
207.2
208.98
210
210
222
223
226
261
262
266
264
267
268
271
272
285
284
289
288
292
295
294
138.905
140.116
140.908
144.242
145
150.36
151.964
157.25
158.925
162.5
164.93
167.259
168.934
173.054
174.967
227
232.038
231.036
238.029
237
244
243
247
247
251
252
257
258
259
262
57-71
89-103
Lanthanide
Actinide
78
Pt
195.084
13
14
16
18
8
5
2
1
7
9
12
3
15
11
4
17
6
10
1
2
3
4
5
6
7
Atomic Number
Symbol
Atomic Mass
Periodic Table of Chemical Elements
© 1869, Dmitri Mendeleev
Nonmetal
Noble Gas
Alkali Metal
Alkaline Earth Metal
Metalloid
Halogen
Metal
Transition Metal
Lanthanide
Actinide