1A 0
1
H
Hydrogen
1.0079
2A 3B 4B 5B 6B 7B 2
He
Helium
4.0026
3
Li
Lithium
6.941
4
Be
Beryllium
9.0122
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
3A 4A 5A 6A 7A 8 1B 2B 13
Al
Aluminum
26.982
14
Si
Silicon
28.086
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
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
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.64
33
As
Arsenic
74.922
34
Se
Selenium
78.96
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.62
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.806
42
Mo
Molybdenum
95.94
43
Tc
Technetium
99
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
51
Sb
Antimony
121.76
52
Te
Tellurium
127.6
53
I
Iodine
126.91
54
Xe
Xenon
131.29
55
Cs
Cesium
132.91
56
Ba
Barium
137.33
*1 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
84
Po
Polonium
208.98
85
At
Astatine
209.99
86
Rn
Radon
222.02
87
Fr
Francium
223.02
88
Ra
Radium
226.03
*2 104
Rf
Rutherfordium
261.11
105
Db
Dubnium
262.11
106
Sg
Seaborgium
263.12
107
Bh
Bohrium
262.12
108
Hs
Hassium
277
109
Mt
Meitnerium
278
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
284
112
Uub
Ununbium
288
113
Uut
Ununtrium
293
114
Uuq
 
 
115
Uup
 
 
116
Uuh
 
 
117
Uus
 
 
118
Uuo
 
 
 
*1 ランタノイド: 57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
*2 アクチノイド: 89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
1 常温で固体   金属元素   アルカリ金属
1 常温で液体   半金属元素   アルカリ土類金属
1 常温で気体   非金属元素   ハロゲン
  人工元素   希ガス
  遷移元素