Periodic Table of the Elements
 
1
1A
2
2A
C
3
1B
4
2B
5
3B
6
4B
7
5B
8
6B
9
7B
10
8B
11
9B
12
10B
13
3A
14
4A
15
5A
16
6A
17
7A
18
8A
1
1
H
1.008
2
He
4.003
2
3
Li
6.941
4
Be
9.012
5
B
10.81
6
C
12.01
7
N
14.01
8
O
16
9
F
19
10
Ne
20.18
3
11
Na
22.99
12
Mg
24.31
13
Al
26.98
14
Si
28.09
15
P
30.97
16
S
32.07
17
Cl
35.45
18
Ar
39.95
4
19
K
39.1
20
Ca
40.08
21
Sc
44.96
22
Ti
47.88
23
V
50.94
24
Cr
52
25
Mn
54.94
26
Fe
55.85
27
Co
58.93
28
Ni
58.69
29
Cu
63.55
30
Zn
65.39
31
Ga
69.72
32
Ge
72.61
33
As
74.92
34
Se
78.96
35
Br
79.9
36
Kr
83.8
5
37
Rb
85.47
38
Sr
87.62
39
Y
88.91
40
Zr
91.22
41
Nb
92.91
42
Mo
95.94
43
Tc
98
44
Ru
101.1
45
Rh
102.9
46
Pd
106.4
47
Ag
107.9
48
Cd
112.4
49
In
114.8
50
Sn
118.7
51
Sb
121.8
52
Te
127.6
53
I
126.9
54
Xe
131.3
6
55
Cs
132.9
56
Ba
137.3
57
La
138.9
58
Ce
140.1
59
Pr
140.9
60
Nd
144.2
61
Pm
145
62
Sm
150.4
63
Eu
152
64
Gd
157.3
65
Tb
158.9
66
Dy
162.5
67
Ho
164.9
68
Er
167.3
69
Tm
168.9
70
Yb
173
71
Lu
175
72
Hf
178.5
73
Ta
180.9
74
W
183.9
75
Re
186.2
76
Os
190.2
77
Ir
192.2
78
Pt
195.1
79
Au
197
80
Hg
200.6
81
Tl
204.4
82
Pb
207.2
83
Bi
209
84
Po
209
85
At
210
86
Rn
222
7
87
Fr
223
88
Ra
226
89
Ac
227
90
Th
232
91
Pa
213
92
U
238
93
Np
237
94
Pu
244
95
Am
243
96
Cm
247
97
Bk
247
98
Cf
251
99
Es
252
100
Fm
257
101
Md
258
102
No
259
103
Lr
260
104
Rf
261
105
Db
262
106
Sg
263
107
Bh
262
108
Hs
265
109
Mt
266
110
Ds
271
111
Rg
272
112
Uub
285
113
Uut
284
114
Uuq
289
115
Uup
288
116
Uuh
292
117
Uus
?
118
Uuo
?