1
H
Hydrogen
1.008
2
He
Helium
4.003
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.086
15
P
Phosphorus
30.974
16
S
Sulfur
32.066
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.942
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.38
31
Ga
Gallium
69.723
32
Ge
Germanium
72.631
33
As
Arsenic
74.922
34
Se
Selenium
78.971
35
Br
Bromine
79.904
36
Kr
Krypton
84.798
37
Rb
Rubidium
84.468
38
Sr
Strontium
87.62
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.95
43
Tc
Technetium
98.907
44
Ru
Ruthenium
101.07
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.42
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.711
51
Sb
Antimony
121.760
52
Te
Tellurium
127.6
53
I
Iodine
126.904
54
Xe
Xenon
131.294
55
Cs
Cesium
132.905
56
Ba
Barium
137.328
57-71
72
Hf
Hafnium
178.49
73
Ta
Tantalum
180.948
74
W
Tungsten
183.84
75
Re
Rhenium
186.207
76
Os
Osmium
190.23
77
Ir
Iridium
192.217
78
Pt
Platinum
195.085
79
Au
Gold
196.967
80
Hg
Mercury
200.592
81
Tl
Thallium
204.383
82
Pb
Lead
207.2
83
Bi
Bismuth
208.980
84
Po
Polonium
[208.982]
85
At
Astatine
209.987
86
Rn
Radon
222.018
87
Fr
Francium
223.020
88
Ra
Radium
226.025
89-103
104
Rf
Rutherfordium
[261]
105
Db
Dubnium
[262]
106
Sg
Seaborgium
[266]
107
Bh
Bohrium
[264]
108
Hs
Hassium
[269]
109
Mt
Meitnerium
[268]
110
Ds
Darmstadtium
[269]
111
Rg
Roentgenium
[272]
112
Cn
Copernicium
[277]
113
Nh
Nihonium
[284]
114
Fl
Flerovium
[289]
115
Mc
Moscovium
[289]
116
Lv
Livermorium
[298]
117
Ts
Tennessine
[294]
118
Og
Oganesson
[294]