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| 1 | 18 | |||||||||||||||||
| 1 |
1
H
Hydrogen
1.008
|
2 | 13 | 14 | 15 | 16 | 17 |
2
He
Helium
4.0026
|
||||||||||
| 2 |
3
Li
Lithium
6.94
|
4
Be
Beryllium
9.0122
|
9
F
Fluorine
18.998
|
10
Ne
Neon
20.180
|
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| 3 |
11
Na
Sodium
22.990
|
12
Mg
Magnesium
24.305
|
3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
14
Si
Silicon
28.085
|
17
Cl
Chlorine
35.45
|
18
Ar
Argon
39.948
|
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| 4 |
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
|
32
Ge
Germanium
72.630
|
35
Br
Bromine
79.904
|
36
Kr
Krypton
83.798
|
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| 5 |
37
Rb
Rubidium
85.468
|
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
|
44
Ru
Ruthenium
101.07
|
45
Rh
Rhodium
102.91
|
46
Pd
Palladium
106.42
|
47
Ag
Silver
107.87
|
48
Cd
Cadmium
112.41
|
49
In
Indium
114.82
|
50
Sn
Tin
118.71
|
53
I
Iodine
126.90
|
54
Xe
Xenon
131.29
|
||
| 6 |
55
Cs
Cesium
132.91
|
56
Ba
Barium
137.33
|
57–71
57–71
Lanthanides
|
72
Hf
Hafnium
178.49
|
73
Ta
Tantalum
180.95
|
74
W
Tungsten
183.84
|
75
Re
Rhenium
186.21
|
76
Os
Osmium
190.23
|
77
Ir
Iridium
192.22
|
78
Pt
Platinum
195.08
|
79
Au
Gold
196.97
|
80
Hg
Mercury
200.59
|
81
Tl
Thallium
204.38
|
82
Pb
Lead
207.2
|
83
Bi
Bismuth
208.98
|
85
At
Astatine
210
|
86
Rn
Radon
222
|
|
| 7 |
87
Fr
Francium
223
|
88
Ra
Radium
226
|
89–103
89–103
Actinides
|
104
Rf
Rutherfordium
267
|
105
Db
Dubnium
268
|
106
Sg
Seaborgium
269
|
107
Bh
Bohrium
270
|
108
Hs
Hassium
269
|
109
Mt
Meitnerium
278
|
110
Ds
Darmstadtium
281
|
111
Rg
Roentgenium
282
|
112
Cn
Copernicium
285
|
113
Nh
Nihonium
286
|
114
Fl
Flerovium
289
|
115
Mc
Moscovium
290
|
116
Lv
Livermorium
293
|
118
Og
Oganesson
294
|
|
| Lanthanides (57–71): |
57
La
Lanthanum
138.91
|
58
Ce
Cerium
140.12
|
59
Pr
Praseodymium
140.91
|
60
Nd
Neodymium
144.24
|
61
Pm
Promethium
145
|
62
Sm
Samarium
150.36
|
63
Eu
Europium
151.96
|
64
Gd
Gadolinium
157.25
|
65
Tb
Terbium
158.93
|
66
Dy
Dysprosium
162.50
|
67
Ho
Holmium
164.93
|
68
Er
Erbium
167.26
|
69
Tm
Thulium
168.93
|
70
Yb
Ytterbium
173.05
|
71
Lu
Lutetium
174.97
|
|||
| Actinides (89–103): |
89
Ac
Actinium
227
|
90
Th
Thorium
232.04
|
91
Pa
Protactinium
231.04
|
92
U
Uranium
238.03
|
93
Np
Neptunium
237
|
94
Pu
Plutonium
244
|
95
Am
Americium
243
|
96
Cm
Curium
247
|
97
Bk
Berkelium
247
|
98
Cf
Californium
251
|
99
Es
Einsteinium
252
|
100
Fm
Fermium
257
|
101
Md
Mendelevium
258
|
102
No
Nobelium
259
|
103
Lr
Lawrencium
266
|
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