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| 组 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
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| 周 |
期 |
ⅠA |
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ⅧA |
| 1 |
1 |
H |
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非金属 |
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惰性气体 |
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2 |
He |
| 氢g |
ⅡA |
|
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碱金属 |
|
|
准金属 |
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|
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ⅢA |
ⅣA |
ⅤA |
ⅥA |
ⅦA |
氦g |
| 2 |
3 |
Li |
4 |
Be |
|
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碱土金属 |
|
|
卤素 |
|
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|
|
5 |
B |
6 |
C |
7 |
N |
8 |
O |
9 |
F |
10 |
Ne |
| 锂 |
铍 |
|
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过渡金属 |
|
|
主族元素 |
|
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|
硼 |
碳 |
氮g |
氧g |
氟g |
氖g |
| 3 |
11 |
Na |
12 |
Mg |
|
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稀有金属 |
|
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|
|
13 |
Al |
14 |
Si |
15 |
P |
16 |
S |
17 |
Cl |
18 |
Ar |
| 钠 |
镁 |
ⅢB |
ⅣB |
ⅤB |
ⅥB |
ⅦB |
|----ⅧB----| |
ⅠB |
ⅡB |
铝 |
硅 |
磷 |
硫 |
氯g |
氩g |
| 4 |
19 |
K |
20 |
Ca |
21 |
Sc |
22 |
Ti |
23 |
V |
24 |
Cr |
25 |
Mn |
26 |
Fe |
27 |
Co |
28 |
Ni |
29 |
Cu |
30 |
Zn |
31 |
Ga |
32 |
Ge |
33 |
As |
34 |
Se |
35 |
Br |
36 |
Kr |
| 钾 |
钙 |
钪 |
钛 |
钒 |
铬 |
锰 |
铁 |
钴 |
镍 |
铜 |
锌 |
镓 |
锗 |
砷 |
硒 |
溴L |
氪g |
| 5 |
37 |
Rb |
38 |
Sr |
39 |
Y |
40 |
Zr |
41 |
Nb |
42 |
Mo |
43 |
Tc |
44 |
Ru |
45 |
Rh |
46 |
Pd |
47 |
Ag |
48 |
Cd |
49 |
In |
50 |
Sn |
51 |
Sb |
52 |
Te |
53 |
I |
54 |
Xe |
| 铷 |
锶 |
钇 |
锆 |
铌 |
钼 |
锝1 |
钌 |
铑 |
钯 |
银 |
镉 |
铟 |
锡 |
锑 |
碲 |
碘 |
氙g |
| 6 |
55 |
Cs |
56 |
Ba |
57 |
La |
72 |
Hf |
73 |
Ta |
74 |
W |
75 |
Re |
76 |
Os |
77 |
Ir |
78 |
Pt |
79 |
Au |
80 |
Hg |
81 |
Tl |
82 |
Pb |
83 |
Bi |
84 |
Po |
85 |
At |
86 |
Rn |
| 铯 |
钡 |
镧* |
铪 |
钽 |
钨 |
铼 |
锇 |
铱 |
铂 |
金 |
汞L |
铊 |
铅 |
铋 |
钋1 |
砹1 |
氡1g |
| 7 |
87 |
Fr |
88 |
Ra |
89 |
Ac |
104 |
105 |
106 |
107 |
108 |
109 |
110 |
111 |
112 |
113 |
114 |
115 |
116 |
117 |
118 |
| 钫1 |
镭1 |
锕** |
Rf2 |
Db2 |
Sg2 |
Bh2 |
Hs2 |
Mt2 |
Uun2 |
Uuu2 |
Uub2 |
Uut2 |
Uuq2 |
Uup2 |
Uuh2 |
Uus2 |
Uuo2g |
| |
| |
| |
|
*镧系 |
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 |
|
|
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|
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| |
|
铈 |
镨 |
钕 |
钷1 |
钐 |
铕 |
钆 |
铽 |
镝 |
钬 |
铒 |
铥 |
镱 |
镥 |
|
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| |
|
**锕系 |
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 |
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| |
|
钍1 |
镤1 |
铀1 |
镎1 |
钚1 |
镅2 |
锔2 |
锫2 |
锎2 |
锿2 |
镄2 |
钔2 |
锘2 |
铹2 |
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| 注：下标为1的是天然放射性元素；下标为2的是人工放射性元素；其他为非放射性元素。 |
| 注：下标为g的是常温气态元素；下标为L的是常温液态元素(溴、汞)；其他为常温固态元素。 |
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