发布日期：2025-12-31 实施日期：2025-12-31
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1 H
氢
1.008
|
2 He
氦
4.003
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|
3 Li
锂
6.941
|
4 Be
铍
9.012
|
5 B
硼
10.81
|
6 C
碳
12.01
|
7 N
氮
14.01
|
8 O
氧
16.00
|
9 F
氟
19.00
|
10 Ne
氖
20.18
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11 Na
钠
22.99
|
12 Mg
镁
24.31
|
13 Al
铝
26.98
|
14 Si
硅
28.09
|
15 P
磷
30.97
|
16 S
硫
32.07
|
17 Cl
氯
35.45
|
18 Ar
氩
39.95
|
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|
19 K
钾
39.10
|
20 Ca
钙
40.08
|
21 Sc
钪
44.96
|
22 Ti
钛
47.87
|
23 V
钒
50.94
|
24 Cr
铬
52.00
|
25 Mn
锰
54.94
|
26 Fe
铁
55.85
|
27 Co
钴
58.93
|
28 Ni
镍
58.69
|
29 Cu
铜
63.55
|
30 Zn
锌
65.38
|
31 Ga
镓
69.72
|
32 Ge
锗
72.64
|
33 As
砷
74.92
|
34 Se
硒
78.96
|
35 Br
溴
79.90
|
36 Kr
氪
83.80
|
|
37 Rb
铷
85.47
|
38 Sr
锶
87.62
|
39 Y
钇
88.91
|
40 Zr
锆
91.22
|
41 Nb
铌
92.91
|
42 Mo
钼
95.96
|
43 Tc
锝
98
|
44 Ru
钌
101.1
|
45 Rh
铑
102.9
|
46 Pd
钯
106.4
|
47 Ag
银
107.9
|
48 Cd
镉
112.4
|
49 In
铟
114.8
|
50 Sn
锡
118.7
|
51 Sb
锑
121.8
|
52 Te
碲
127.6
|
53 I
碘
126.9
|
54 Xe
氙
131.3
|
|
55 Cs
铯
132.9
|
56 Ba
钡
137.3
|
57 La
镧
138.9
|
72 Hf
铪
178.5
|
73 Ta
钽
180.9
|
74 W
钨
183.8
|
75 Re
铼
186.2
|
76 Os
锇
190.2
|
77 Ir
铱
192.2
|
78 Pt
铂
195.1
|
79 Au
金
197.0
|
80 Hg
汞
200.6
|
81 Tl
铊
204.4
|
82 Pb
铅
207.2
|
83 Bi
铋
209.0
|
84 Po
钋
209
|
85 At
砹
210
|
86 Rn
氡
222
|
|
87 Fr
钫
223
|
88 Ra
镭
226
|
89 Ac
锕
227
|
104 Rf
𬬻
267
|
105 Db
𬭊
268
|
106 Sg
𬭳
269
|
107 Bh
𬭛
270
|
108 Hs
𬭶
269
|
109 Mt
鿏
278
|
110 Ds
𫟼
281
|
111 Rg
𬬭
282
|
112 Cn
鿔
285
|
113 Nh
鿭
286
|
114 Fl
𫓧
289
|
115 Mc
镆
290
|
116 Lv
鉝
293
|
117 Ts
鿬
294
|
118 Og
鿫
294
|
|
58 Ce
铈
140.1
|
59 Pr
镨
140.9
|
60 Nd
钕
144.2
|
61 Pm
钷
145
|
62 Sm
钐
150.4
|
63 Eu
铕
152.0
|
64 Gd
钆
157.3
|
65 Tb
铽
158.9
|
66 Dy
镝
162.5
|
67 Ho
钬
164.9
|
68 Er
铒
167.3
|
69 Tm
铥
168.9
|
70 Yb
镱
173.0
|
71 Lu
镥
175.0
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90 Th
钍
232.0
|
91 Pa
镤
231.0
|
92 U
铀
238.0
|
93 Np
镎
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
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