1
18
1
H氢
Hydrogen
1.008
2
碱金属
碱土金属
非金属
类金属
后过渡金属
过渡金属
卤素
惰性气体
镧系元素
放射元素
13
14
15
16
17
2
He氦
Helium
4.003
3
Li锂
Lithium
6.940
4
Be铍
Beryllium
9.012
5
B硼
Boron
10.810
6
C碳
Carbon
12.011
7
N氮
Nitrogen
14.007
8
O氧
Oxygen
15.999
9
F氟
Fluorine
18.998
10
Ne氖
Neon
20.180
11
Na钠
Sodium
22.990
12
Mg镁
Magnesium
24.305
3
4
5
6
7
8
9
10
11
12
13
Al铝
Aluminium
26.982
14
Si硅
Silicon
28.085
15
P磷
Phosphorus
30.974
16
S硫
Sulfur
32.06
17
Cl氯
Chlorine
35.45
18
Ar氩
Argon
39.948
19
K钾
Potassium
39.098
20
Ca钙
Calcium
40.078
21
Sc钪
Scandium
44.956
22
Ti钛
Titanium
47.867
23
V钒
Vanadium
50.942
24
Cr铬
Chromium
51.996
25
Mn锰
Manganese
54.938
26
Fe铁
Iron
55.845
27
Co钴
Cobalt
58.933
28
Ni镍
Nickel
58.693
29
Cu铜
Copper
63.546
30
Zn锌
Zinc
65.38
31
Ga镓
Gallium
69.723
32
Ge锗
Germanium
72.63
33
As砷
Arsenic
74.922
34
Se硒
Selenium
78.971
35
Br溴
Bromine
79.904
36
Kr氪
Krypton
83.768
37
Rb铷
Rubidium
84.468
38
Sr锶
Strontium
87.620
39
Y钇
Yttrium
88.906
40
Zr锆
Zirconium
91.224
41
Nb铌
Niobium
92.906
42
Mo钼
Molybdenum
95.95
43
Tc锝
Technetium
98.907
44
Ru钌
Ruthenium
101.07
45
Rh铑
Rhodium
102.906
46
Pd钯
Palladium
106.42
47
Ag银
Silver
107.868
48
Cd镉
Cadmium
112.411
49
In铟
Indium
114.818
50
Sn锡
Tin
118.711
51
Sb锑
Antimony
121.76
52
Te碲
Tellurium
127.6
53
I碘
Iodine
126.904
54
Xe氙
Xenon
131.294
55
Cs铯
Caesium
132.905
56
Ba钡
Barium
137.328
57-71
镧系
Lanthanoids
72
Hf铪
Hafnium
178.49
73
Ta钽
Tantalum
180.948
74
W钨
Tungsten
183.84
75
Re铼
Rhenium
186.207
76
Os锇
Osmium
190.23
77
Ir铱
Iridium
192.217
78
Pt铂
Platinum
195.085
79
Au金
Gold
196.967
80
Hg汞
Mercury
200.592
81
Tl铊
Thallium
204.383
82
Pb铅
Lead
207.2
83
Bi铋
Bismuth
208.98
84
Po钋
Polonium
(208.982)
85
At砹
Astatine
209.987
86
Rn氡
Radon
222.018
87
Fr钫
Francium
223.02
88
Ra镭
Radium
226.025
89-103
锕系
Actinoids
104
Rf鑪
Rutherfordium
(261)
105
Db𨧀
Dubnium
(262)
106
Sg𨭎
Seaborgium
(266)
107
Bh𨨏
Bohrium
(264)
108
Hs𨭆
Hassium
(269)
109
Mt䥑
Meitnerium
(268)
110
Ds鐽
Darmstadtium
(269)
111
Rg錀
Roentgenium
(272)
112
Cn
Copernicium
(277)
113
Uut
Ununtrium
?
114
Fl
Flerovium
(289)
115
Uup
Ununpentium
?
116
Lv
Livermorium
(298)
117
Uus
Ununseptium
?
118
Uuo
Ununoctium
?
57
La镧
Lanthanum
138.905
58
Ce铈
Cerium
140.116
59
Pr镨
Praseodymium
140.908
60
Nd钕
Neodymium
144.242
61
Pm钷
Promethium
(145)
62
Sm钐
Samarium
150.36
63
Eu铕
Europium
151.964
64
Gd钆
Gadolinium
157.25
65
Tb铽
Terbium
158.925
66
Dy镝
Dysprosium
162.5
67
Ho钬
Holmium
164.93
68
Er铒
Erbium
167.259
69
Tm铥
Thulium
168.934
70
Yb镱
Ytterbium
173.045
71
Lu镥
Lutetium
174.967
89
Ac锕
Actinium
(227)
90
Th钍
Thorium
232.038
91
Pa镤
Protactinium
231.036
92
U铀
Uranium
238.029
93
Np镎
Neptunium
(237)
94
Pu钚
Plutonium
(244)
95
Am镅
Americium
(243)
96
Cm锔
Curium
(247)
97
Bk锫
Berkelium
(247)
98
Cf锎
Californium
(251)
99
Es锿
Einsteinium
(252)
100
Fm镄
Fermium
(257)
101
Md钔
Mendelevium
(258)
102
No锘
Nobelium
(259)
103
Lr铹
Lawrencium
(262)