Periodic Table: Atomic Mass (amu)

1
IA		 2
IIA		 3
IIIB		 4
IVB		 5
VB		 6
VIB		 7
VIB		 8
VIIIB		 9
VIIIB		 10
VIIIB		 11
IB		 12
IIB		 13
IIIA		 14
IVA		 15
VA		 16
VIA		 17
VIIA		 18
VIIIA
1
1
H
1.00794
2
He
4.002602
2
3
Li
6.941
4
Be
9.012182
5
B
10.811
6
C
12.0107
7
N
14.00674
8
O
15.9994
9
F
18.99840
10
Ne
20.1797
3
11
Na
22.98977
12
Mg
24.305
13
Al
26.98154
14
Si
28.0855
15
P
30.97376
16
S
32.066
17
Cl
35.4527
18
Ar
39.948
4
19
K
39.0983
20
Ca
40.078
21
Sc
44.95591
22
Ti
47.867
23
V
50.9415
24
Cr
51.9961
25
Mn
54.93805
26
Fe
55.845
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
88.90585
40
Zr
91.224
41
Nb
92.90638
42
Mo
95.94
43
Tc
98
44
Ru
101.07
45
Rh
102.9055
46
Pd
106.42
47
Ag
107.8682
48
Cd
112.411
49
In
114.818
50
Sn
118.71
51
Sb
121.76
52
Te
127.6
53
I
126.9045
54
Xe
131.29
6
55
Cs
132.9055
56
Ba
137.327
57
La
138.9055
72
Hf
178.49
73
Ta
180.9479
74
W
183.84
75
Re
186.207
76
Os
190.23
77
Ir
192.217
78
Pt
195.078
79
Au
196.9666
80
Hg
200.59
81
Tl
204.3833
82
Pb
207.2
83
Bi
208.9804
84
Po
209
85
At
210
86
Rn
222
7
87
Fr
223
88
Ra
226
89
Ac
227
104
Rf
261
105
Ha
262
106
Sg
263
107
Ns
264
108
Hs
265
109
Mt
266
110
Uun
269
111
Uuu
272
112
Uub
277
113
Uut
114
Uuq
285
115
Uup
116
Uuh
289
117
Uus
118
Uuo
293
6 Lanthanide
Series
58
Ce
140.116
59
Pr
140.9077
60
Nd
144.24
61
Pm
145
62
Sm
150.36
63
Eu
151.964
64
Gd
157.25
65
Tb
158.9253
66
Dy
162.50
67
Ho
164.9303
68
Er
167.26
69
Tm
168.9342
70
Yb
173.04
71
Lu
174.967
7 Actinide
Series
90
Th
232.0381
91
Pa
231.0359
92
U
238.0289
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

Alkaline Earth MetalMetalloidNon-metalNoble Gas
Alkaline MetalTransition MetalOther MetalHalogenRare Earth