1
H
Hydrogen
1.00794
Hydrogen
2
He
Helium
4.002602
Helium
3
Li
Lithium
6.941
Lithium
4
Be
Beryllium
9.012182
Beryllium
5
B
Boron
10.811
Boron
6
C
Carbon
12.0107
Carbon
7
N
Nitrogen
14.0067
Nitrogen
8
O
Oxygen
15.9994
Oxygen
9
F
Flourine
18.9984032
Flourine
10
Ne
Neon
20.1797
Neon
11
Na
Sodium
22.98976928
Sodium
12
Mg
Magnesium
24.305
Magnesium
13
Al
Aluminium
26.9815386
Aluminium
14
Si
Silicon
28.0855
Silicon
15
P
Phosphorus
30.973762
Phosphorus
16
S
Sulfur
32.065
Sulfur
17
Cl
Chlorine
35.453
Chlorine
18
Ar
Argon
39.948
Argon
19
K
Potassium
39.0983
Potassium
20
Ca
Calcium
40.078
Calcium
21
Sc
Scandium
44.955912
Scandium
22
Ti
Titanium
47.867
Titanium
23
V
Vanadium
50.9415
Vanadium
24
Cr
Chromium
51.9961
Chromium
25
Mn
Manganese
54.938045
Manganese
26
Fe
Iron
55.845
Iron
27
Co
Cobalt
58.933195
Cobalt
28
Ni
Nickel
58.6934
Nickel
29
Cu
Copper
63.546
Copper
30
Zn
Zinc
65.38
Zinc
31
Ga
Gallium
69.723
Gallium
32
Ge
Germanium
72.64
Germanium
33
As
Arsenic
74.9216
Arsenic
34
Se
Selenium
78.96
Selenium
35
Br
Bromine
79.904
Bromine
36
Kr
Krypton
83.798
Krypton
37
Rb
Rubidium
85.4678
Rubidium
38
Sr
Strontium
87.62
Strontium
39
Y
Yttrium
88.90585
Yttrium
40
Zr
Zirconium
91.224
Zirconium
41
Nb
Niobium
92.90638
Niobium
42
Mo
Molybdenum
95.96
Molybdenum
43
Tc
Technetium
(97.9072)
Technetium
44
Ru
Ruthenium
101.07
Ruthenium
45
Rh
Rhodium
102.9055
Rhodium
46
Pd
Palladium
106.42
Palladium
47
Ag
Silver
107.8682
Silver
48
Cd
Cadmium
112.411
Cadmium
49
In
Indium
114.818
Indium
50
Sn
Tin
118.71
Tin
51
Sb
Antimony
121.76
Antimony
52
Te
Tellurium
127.6
Tellurium
53
I
Iodine
126.90447
Iodine
54
Xe
Xenon
131.293
Xenon
55
Cs
Caesium
132.9054519
Caesium
56
Ba
Barium
137.327
Barium
57
La
Lanthanum
138.90547
Lanthanum
58
Ce
Cerium
140.116
Cerium
59
Pr
Praseodymium
140.90765
Praseodymium
60
Nd
Neodymium
144.242
Neodymium
61
Pm
Promethium
(145)
Promethium
62
Sm
Samarium
150.36
Samarium
63
Eu
Europium
151.964
Europium
64
Gd
Gadolinium
157.25
Gadolinium
65
Tb
Terbium
158.92535
Terbium
66
Dy
Dysprosium
162.5
Dysprosium
67
Ho
Holmium
164.93032
Holmium
68
Er
Erbium
167.259
Erbium
69
Tm
Thulium
168.93421
Thulium
70
Yb
Ytterbium
173.054
Ytterbium
71
Lu
Lutetium
174.9668
Lutetium
72
Hf
Hafnium
178.49
Hafnium
73
Ta
Tantalum
180.94788
Tantalum
74
W
Tungsten
183.84
Tungsten
75
Re
Rhenium
186.207
Rhenium
76
Os
Osmium
190.23
Osmium
77
Ir
Iridium
192.217
Iridium
78
Pt
Platinum
195.084
Platinum
79
Au
Gold
196.966569
Gold
80
Hg
Mercury
200.59
Mercury
81
Tl
Thallium
204.3833
Thallium
82
Pb
Lead
207.2
Lead
83
Bi
Bismuth
208.9804
Bismuth
84
Po
Polonium
(208.9824)
Polonium
85
At
Astatine
(209.9871)
Astatine
86
Rn
Radon
(222.0176)
Radon
87
Fr
Francium
(223)
Francium
88
Ra
Radium
(226)
Radium
89
Ac
Actinium
(227)
Actinium
90
Th
Thorium
232.03806
Thorium
91
Pa
Protactinium
231.003588
Protactinium
92
U
Uranium
238.02891
Uranium
93
Np
Neptunium
(237)
Neptunium
94
Pu
Plutonium
(244)
Plutonium
95
Am
Americium
(243)
Americium
96
Cm
Curium
(247)
Curium
97
Bk
Berkelium
(247)
Berkelium
98
Cf
Californium
(251)
Californium
99
Es
Einsteinium
(252)
Einsteinium
100
Fm
Fermium
(257)
Fermium
101
Md
Mendelevium
(258)
Mendelevium
102
No
Nobelium
(259)
Nobelium
103
Lr
Lawrencium
(262)
Lawrencium
104
Rf
Rutherfordium
(261)
Rutherfordium
105
Db
Dubnium
(262)
Dubnium
106
Sg
Seaborgium
(266)
Seaborgium
107
Bh
Bohrium
(264)
Bohrium
108
Hs
Hassium
(277)
Hassium
109
Mt
Meitnerium
(268)
Meitnerium
110
Ds
Darmstadtium
(271)
Darmstadtium
111
Rg
Roentgenium
(272)
Roentgenium
112
Uub
Ununbium
(285)
Ununbium
113
Uut
Ununtrium
(284)
Ununtrium
114
Uuq
Ununquadium
(289)
Ununquadium
115
Uup
Ununpentium
(288)
Ununpentium
116
Uuh
Ununhexium
(292)
Ununhexium
117
Uus
Ununseptium
Ununseptium
118
Uuo
Ununoctium
(294)
Ununoctium