WebElements
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The periodic table is an arrangment of the chemical elements ordered by atomic number so that periodic properties of the elements (chemical periodicity) are made clear.
Realnode机场永久免费加速-免费VP加速器
| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period 1 |
1
H
1.008
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|
2
He
4.0026
Helium
|
|||||||||||||||||
| 2 |
3
Li
6.94
Lithium
|
4
Be
9.0122
Beryllium
|
5
B
10.81
Boron
|
6
C
12.011
Carbon
|
7
N
14.007
Nitrogen
|
8
O
15.999
Oxygen
|
9
F
18.998
Fluorine
|
10
Ne
20.180
Neon
|
|||||||||||
| 3 |
11
Na
22.990
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|
12
Mg
24.305
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|
13
Al
26.982
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|
14
Si
28.085
Silicon
|
15
P
30.974
Phosphorus
|
16
S
32.06
Sulfur
|
17
Cl
35.45
Chlorine
|
18
Ar
39.948
Argon
|
|||||||||||
| 4 |
19
K
39.098
Potassium
|
20
Ca
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Calcium
|
21
Sc
44.956
Scandium
|
22
Ti
47.867
Titanium
|
23
V
50.942
Vanadium
|
24
Cr
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Chromium
|
25
Mn
54.938
Manganese
|
26
Fe
55.845
Iron
|
27
Co
58.933
Cobalt
|
28
Ni
58.693
Nickel
|
29
Cu
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Copper
|
30
Zn
65.38
Zinc
|
31
Ga
69.723
Gallium
|
32
Ge
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Germanium
|
33
As
74.922
Arsenic
|
34
Se
78.971
Selenium
|
35
Br
79.904
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|
36
Kr
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Krypton
|
|
| 5 |
37
Rb
85.468
Rubidium
|
38
Sr
87.62
Strontium
|
39
Y
88.906
Yttrium
|
40
Zr
91.224
Zirconium
|
41
Nb
92.906
Niobium
|
42
Mo
95.95
Molybdenum
|
43
Tc ☢
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Technetium
|
44
Ru
101.07
Ruthenium
|
45
Rh
102.91
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|
46
Pd
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Palladium
|
47
Ag
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Silver
|
48
Cd
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|
49
In
114.82
Indium
|
50
Sn
118.71
Tin
|
51
Sb
121.76
Antimony
|
52
Te
127.60
Tellurium
|
53
I
126.90
Iodine
|
54
Xe
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Xenon
|
|
| 6 |
55
Cs
132.91
Caesium
|
56
Ba
137.33
Barium
|
* |
71
Lu
174.97
Lutetium
|
72
Hf
178.49
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|
73
Ta
180.95
Tantalum
|
74
W
183.84
Tungsten
|
75
Re
186.21
Rhenium
|
76
Os
190.23
Osmium
|
77
Ir
192.22
Iridium
|
78
Pt
195.08
Platinum
|
79
Au
196.97
Gold
|
80
Hg
200.59
Mercury
|
81
Tl
204.38
Thallium
|
82
Pb
207.2
Lead
|
83
Bi
208.98
Bismuth
|
84
Po ☢
208.98
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|
85
At ☢
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Astatine
|
86
Rn ☢
222.02
Radon
|
| 7 |
87
Fr ☢
223.02
Francium
|
88
Ra ☢
226.03
Radium
|
** |
103
Lr ☢
262.11
Lawrencium
|
104
Rf ☢
267.12
Rutherfordium
|
105
Db ☢
270.13
Dubnium
|
106
Sg ☢
269.13
Seaborgium
|
107
Bh ☢
270.13
Bohrium
|
108
Hs ☢
269.13
Hassium
|
109
Mt ☢
278.16
Meitnerium
|
110
Ds ☢
281.17
Darmstadtium
|
111
Rg ☢
281.17
Roentgenium
|
112
Cn ☢
285.18
Copernicium
|
113
Nh ☢
286.18
Nihonium
|
114
Fl ☢
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Flerovium
|
115
Mc ☢
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Moscovium
|
116
Lv ☢
293.20
Livermorium
|
117
Ts ☢
293.21
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|
118
Og ☢
294.21
Oganesson
|
| *Lanthanoids | * |
57
La
138.91
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|
58
Ce
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Cerium
|
59
Pr
140.91
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|
60
Nd
144.24
Neodymium
|
61
Pm ☢
144.91
Promethium
|
62
Sm
150.36
Samarium
|
63
Eu
151.96
Europium
|
64
Gd
157.25
Gadolinium
|
65
Tb
158.93
Terbium
|
66
Dy
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Dysprosium
|
67
Ho
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Holmium
|
68
Er
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Erbium
|
69
Tm
168.93
Thulium
|
70
Yb
173.05
Ytterbium
|
||||
| **Actinoids | ** |
89
Ac ☢
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Actinium
|
90
Th ☢
232.04
Thorium
|
91
Pa ☢
231.04
Protactinium
|
92
U ☢
238.03
Uranium
|
93
Np ☢
237.05
Neptunium
|
94
Pu ☢
244.06
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|
95
Am ☢
243.06
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|
96
Cm ☢
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Curium
|
97
Bk ☢
247.07
Berkelium
|
98
Cf ☢
251.08
Californium
|
99
Es ☢
252.08
Einsteinium
|
100
Fm ☢
257.10
Fermium
|
101
Md ☢
258.10
Mendelevium
|
102
No ☢
259.10
Nobelium
|
||||
The standard form of the periodic table shown here includes periods (shown horizontally) and groups (shown vertically). The properties of elements in groups are similar in some respects to each other.
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