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
1.00794
2
He
4.0026
2
3
Li
6.941
4
Be
9.01218
5
B
10.811
6
C
12.011
7
N
14.0067
8
O
15.9994
9
F
18.9984
10
Ne
20.1797
3
11
Na
22.9898
12
Mg
24.305
13
Al
26.9815
14
Si
28.0855
15
P
30.9738
16
S
32.066
17
Cl
35.4527
18
Ar
39.948
4
19
K
39.0983
20
Ca
40.078
21
Sc
44.9559
22
Ti
47.88
23
V
50.9415
24
Cr
51.9961
25
Mn
54.9381
26
Fe
55.847
27
Co
58.9332
28
Ni
58.6934
29
Cu
63.546
30
Zn
65.39
31
Ga
69.723
32
Ge
72.61
33
As
74.9216
34
Se
78.96
35
Br
79.904
36
Kr
83.8
5
37
Rb
85.4678
38
Sr
87.62
39
Y
88.9059
40
Zr
91.224
41
Nb
92.9064
42
Mo
95.94
43
Tc
98
44
Ru
101.07
45
Rh
102.906
46
Pd
106.42
47
Ag
107.868
48
Cd
112.411
49
In
114.82
50
Sn
118.71
51
Sb
121.757
52
Te
127.6
53
I
126.904
54
Xe
131.29
6
55
Cs
132.905
56
Ba
137.327
*
71
Lu
174.967
72
Hf
178.49
73
Ta
180.948
74
W
183.85
75
Re
186.207
76
Os
190.2
77
Ir
192.22
78
Pt
195.08
79
Au
196.967
80
Hg
200.59
81
Tl
204.383
82
Pb
207.2
83
Bi
208.98
84
Po
209
85
At
210
86
Rn
222
7
87
Fr
223
88
Ra
226.025
**
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
?
 
* Lanthanides
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
** Actinides
89
Ac
227
90
Th
232.038
91
Pa
213.036
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
100
Fm
257
101
Md
258
102
No
259

View as full table