|
1 H
氢
1.008
|
2 He
氦
4.003
|
||||||||||||||||
|
3 Li
锂
6.941
|
4 Be
铍
9.012
|
5 B
硼
10.811
|
6 C
碳
12.011
|
7 N
氮
14.007
|
8 O
氧
15.999
|
9 F
氟
18.998
|
10 Ne
氖
20.180
|
||||||||||
|
11 Na
钠
22.990
|
12 Mg
镁
24.305
|
13 Al
铝
26.982
|
14 Si
硅
30.974
|
15 P
磷
30.974
|
16 S
硫
32.066
|
17 Cl
氯
35.453
|
18 Ar
氩
39.948
|
||||||||||
|
19 K
钾
39.098
|
20 Ca
钙
40.08
|
21 Sc
钪
44.956
|
22 Ti
钛
47.88
|
23 V
钒
50.942
|
24 Cr
铬
51.996
|
25 Mn
锰
54.938
|
26 Fe
铁
55.847
|
27 Co
钴
58.933
|
28 Ni
镍
58.69
|
29 Cu
铜
63.546
|
30 Zn
锌
65.39
|
31 Ga
镓
69.723
|
32 Ge
锗
72.61
|
33 As
砷
74.922
|
34 Se
硒
78.96
|
35 Br
溴
79.904
|
36 Kr
氪
83.80
|
|
37 Rb
铷
85.47
|
38 Sr
锶
87.62
|
39 Y
钇
88.906
|
40 Zr
锆
91.224
|
41 Nb
铌
92.906
|
42 Mo
钼
95.95
|
43 Tc
锝
(98)
|
44 Ru
钌
101.07
|
45 Rh
铑
102.91
|
46 Pd
钯
106.42
|
47 Ag
银
107.87
|
48 Cd
镉
112.41
|
49 In
铟
114.82
|
50 Sn
锡
118.17
|
51 Sb
锑
121.75
|
52 Te
碲
127.60
|
53 I
碘
126.90
|
54 Xe
氙
131.29
|
|
55 Cs
铯
132.90
|
56 Ba
钡
137.33
|
57-71镧系
|
72 Hf
铪
178.49
|
73 Ta
钽
180.95
|
74 W
钨
183.85
|
75 Re
铼
186.21
|
76 Os
锇
190.2
|
77 Ir
铱
192.22
|
78 Pt
铂
195.08
|
79 Au
金
196.97
|
80 Hg
汞
200.59
|
81 Tl
铊
204.38
|
82 Pb
铅
207.2
|
83 Bi
铋
208.98
|
84 Po
钋
(209)
|
85 At
砹
(210)
|
86 Rn
氡
(222)
|
|
87 Fr
钫
(223)
|
88 Ra
镭
(226)
|
89-103锕系
|
104 Rf
𬬻
(265)
|
105 Db
𬭊
(268)
|
106 Sg
𬭳
(271)
|
107 Bh
𬭛
(270)
|
108 Hs
𬭶
(277)
|
109 Mt
鿏
276
|
110 Ds
𫟼
(281)
|
111 Rg
𬬭
(280)
|
112 Cn
鎶
(285)
|
113 Nh
鉨
(284)
|
114 Fl
鈇
(289)
|
115 Mc
镆
(288)
|
116 Lv
鉝
(293)
|
117 Ts
石田
(294)
|
118 Og
气奥
(294)
|
|
镧系
|
57 La
镧
138.91
|
58 Ce
铈
140.12
|
59 Pr
镨
140.91
|
60 Nd
钕
144.24
|
61 Pm
钷
(145)
|
62 Sm
钐
150.36
|
63 Eu
铕
151.96
|
64 Gd
钆
157.25
|
65 Tb
铽
158.92
|
66 Dy
镝
162.50
|
67 Ho
钬
164.93
|
68 Er
饵
167.26
|
69 Tm
铥
168.93
|
70 Yb
镱
173.04
|
71 Lu
镥
174.97
|
||
|
锕系
|
89 Ac
锕
(227)
|
90 Th
钍
232.04
|
91 Pa
镨
231
|
92 U
铀
238.03
|
93 Np
鎿
(237)
|
94 Pu
钚
(244)
|
95 Am
镅
(243)
|
96 Cm
锔
(247)
|
97 Bk
锫
(247)
|
98 Cf
锎
(251)
|
99 Es
锿
(252)
|
100 Fm
镄
(257)
|
101 Md
钔
(258)
|
102 No
锘
(259)
|
103 Lr
铹
(262)
|