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  2. 元素周期表
Hydrogen
1

H

1.0079
Helium
2

He

4.0026
Lithium
3

Li

6.941
Berylium
4

Be

9.0122
Neon
10

Ne

20.1797
Fluorine
9

F

18.9984
Oxygen
8

O

15.9994
Nitrogen
7

N

14.0067
Carbon
6

C

12.0107
Boron
5

B

10.811
Sodium
11

Na

22.9898
Magnesiurn
12

Mg

24.3050
Argon
18

Ar

39.948
Chlorine
17

Cl

35.453
Sulfur
16

S

32.065
Phosphorus
15

P

30.9738
Silicon
14

Si

28.0855
Aluminum
13

Al

26.9815
Potassium
19

K

39.0983
Calcium
20

Ca

40.078
Scandium
21

Sc

44.9559
Titanium
22

Ti

47.867
Vanadium
23

V

50.9415
Chromium
24

Cr

51.9961
Manganese
25

Mn

54.938
Iron
26

Fe

55.845
Cobalt
27

Co

58.9332
Nickel
28

Ni

58.6934
Copper
29

Cu

63.546
Zinc
30

Zn

65.409
Gallium
31

Ga

69.723
Germanium
32

Ge

72.64
Arsenic
33

As

74.9216
Selenium
34

Se

78.96
Bromine
35

Br

79.904
Krypton
36

Kr

83.798
Rubidium
37

Rb

85.4678
Strontium
38

Sr

87.62
Yttrium
39

Y

88.9059
Zirconium
40

Zr

91.224
Niobium
41

Nb

92.9064
Molybdenum
42

Mo

95.94
Technetium
43

Tc

(98)
Ruthenium
44

Ru

101.07
Rhodium
45

Rh

102.9055
Palladium
46

Pd

106.42
Sliver
47

Ag

107.8682
Cadmium
48

Cd

112.411
Indium
49

In

114.818
Tin
50

Sn

118.710
Antimony
51

Sb

121.760
Tellurium
52

Te

127.60
Iodine
53

I

126.9045
Xenon
54

Xe

131.293
Cesium
55

Cs

132.90545
Barium
56

Ba

137.327
Lanthanum
57

La

138.9055
Hafnium
72

Hf

178.49
Tantalum
73

Ta

180.9479
Tungsten
74

W

183.84
Rhenium
75

Re

186.207
Osmium
76

Os

190.23
Iridium
77

Ir

192.217
Platimun
78

Pt

195.078
Gold
79

Au

196.9666
Mercury
80

Hg

200.59
Thallium
81

Tl

204.3833
Lead
82

Pb

207.2
Bismuth
83

Bi

208.9804
Polonium
84

Po

(209)
Astatine
85

At

(210)
Radon
86

Rn

(222)
Francium
87

Fr

(223)
Radium
88

Ra

(226)
Actinium
89

Ac

(227)
Rutherfordium
104

Rf

(261)
Dubnium
105

Db

(262)
Seaborgium
106

Sg

(266)
Bohrium
107

Bh

(264)
Hassium
108

Hs

(277)
Meitnerium
109

Mt

(268)
Darmstadtium
110

Ds

(271)
Roentgenium
111

Rg

(272)
Lutetium
71

Lu

174.967
Ytterbium
70

Yb

173.04
Thulium
69

Tm

168.9342
Erbium
68

Er

167.259
Holmium
67

Ho

164.9303
Dysprosium
66

Dy

162.500
Terbium
65

Tb

158.9253
Gadolinium
64

Gd

157.25
Europium
63

Eu

151.964
Samarium
62

Sm

150.36
Promethium
61

Pm

(145)
Neodymium
60

Nd

144.24
Praseodymium
59

Pr

140.9077
Cerium
58

Ce

140.116
Lawrencium
103

Lr

(262)
Nobelium
102

No

(259)
Mendelevium
101

Md

(258)
Eerimium
100

Fm

(257)
Einsteinium
99

Es

(252)
Californium
98

Cf

(251)
Berkelium
97

Bk

(247)
Curium
96

Cm

(247)
Americium
95

Am

(243)
Plutonium
94

Pu

(244)
Neptunium
93

Np

(237)
Uranium
92

U

238.0289
Protactinium
91

Pa

231.0359
Thorium
90

Th

232.0381