相對原子質量表
- 本相對原子質量表按原子序數排。
- 本表數據源自2022年IUPAC元素週期表(IUPAC 2022 standard atomic weights)(頁面存檔備份,存於網際網路檔案館),單同位素質量源自2021年版各元素標準原子質量(IUPAC技術報告) (頁面存檔備份,存於網際網路檔案館),以碳十二=12為標準。
- 本表[]內的原子質量為放射元素(除鉍、釷、鏷、鈾,雖然這些元素沒有穩定同位素,但有天然放射同位素鉍209,釷232,鏷231,鈾235、238,故仍可給予標準原子量)最長半衰期的同位素質量數。
原子序 | 元素名 | 符號 | 標準原子質量 | 不確定度 | 單同位素質量 |
---|---|---|---|---|---|
1 | 氫 | H | 1.0080 | ±0.0002 | |
2 | 氦 | He | 4.0026 | ±0.0001 | |
3 | 鋰 | Li | 6.94 | ±0.06 | |
4 | 鈹 | Be | 9.0122 | ±0.0001 | 9.0121 831±0.0000 005 |
5 | 硼 | B | 10.81 | ±0.02 | |
6 | 碳 | C | 12.011 | ±0.002 | |
7 | 氮 | N | 14.007 | ±0.001 | |
8 | 氧 | O | 15.999 | ±0.001 | |
9 | 氟 | F | 18.998 | ±0.001 | |
10 | 氖 | Ne | 20.180 | ±0.001 | |
11 | 鈉 | Na | 22.990 | ±0.001 | |
12 | 鎂 | Mg | 24.305 | ±0.002 | |
13 | 鋁 | Al | 26.982 | ±0.001 | |
14 | 矽 | Si | 28.0855 | ±0.001 | |
15 | 磷 | P | 30.974 | ±0.001 | |
16 | 硫 | S | 32.06 | ±0.02 | |
17 | 氯 | Cl | 35.45 | ±0.01 | |
18 | 氬 | Ar | 39.95 | ±0.16 | |
19 | 鉀 | K | 39.098 | ±0.001 | |
20 | 鈣 | Ca | 40.078 | ±0.004 | |
21 | 鈧 | Sc | 44.956 | ±0.0001 | |
22 | 鈦 | Ti | 47.867 | ±0.001 | |
23 | 釩 | V | 50.942 | ±0.001 | |
24 | 鉻 | Cr | 51.996 | ±0.001 | |
25 | 錳 | Mn | 54.938 | ±0.001 | |
26 | 鐵 | Fe | 55.845 | ±0.002 | |
27 | 鈷 | Co | 58.933 | ±0.001 | |
28 | 鎳 | Ni | 58.693 | ±0.001 | |
29 | 銅 | Cu | 63.546 | ±0.003 | |
30 | 鋅 | Zn | 65.38 | ±0.02 | |
31 | 鎵 | Ga | 69.723 | ±0.001 | |
32 | 鍺 | Ge | 72.630 | ±0.008 | |
33 | 砷 | As | 74.922 | ±0.001 | |
34 | 硒 | Se | 78.971 | ±0.008 | |
35 | 溴 | Br | 79.904 | ±0.003 | |
36 | 氪 | Kr | 83.798 | ±0.002 | |
37 | 銣 | Rb | 85.468 | ±0.001 | |
38 | 鍶 | Sr | 87.62 | ±0.01 | |
39 | 釔 | Y | 88.906 | ±0.001 | |
40 | 鋯 | Zr | 91.224 | ±0.002 | |
41 | 鈮 | Nb | 92.906 | ±0.001 | |
42 | 鉬 | Mo | 95.95 | ±0.01 | |
43 | 鎝 | Tc | [97] | ||
44 | 釕 | Ru | 101.07 | ±0.02 | |
45 | 銠 | Rh | 102.91 | ±0.01 | |
46 | 鈀 | Pd | 106.42 | ±0.01 | |
47 | 銀 | Ag | 107.87 | ±0.01 | |
48 | 鎘 | Cd | 112.41 | ±0.01 | |
49 | 銦 | In | 114.82 | ±0.01 | |
50 | 錫 | Sn | 118.71 | ±0.01 | |
51 | 銻 | Sb | 121.76 | ±0.01 | |
52 | 碲 | Te | 127.60 | ±0.03 | |
53 | 碘 | I | 126.90 | ±0.01 | |
54 | 氙 | Xe | 131.29 | ±0.01 | |
55 | 銫 | Cs | 132.91 | ±0.01 | |
56 | 鋇 | Ba | 137.33 | ±0.01 | |
57 | 鑭 | La | 138.91 | ±0.01 | |
58 | 鈰 | Ce | 140.12 | ±0.01 | |
59 | 鐠 | Pr | 140.91 | ±0.01 | |
60 | 釹 | Nd | 144.24 | ±0.01 | |
61 | 鉕 | Pm | [145] | ||
62 | 釤 | Sm | 150.36 | ±0.02 | |
63 | 銪 | Eu | 151.96 | ±0.01 | |
64 | 釓 | Gd | 157.25 | ±0.03 | |
65 | 鋱 | Tb | 158.93 | ±0.01 | Tb159,穩定,158.925 354±0.000 007 |
66 | 鏑 | Dy | 162.50 | ±0.01 | |
67 | 鈥 | Ho | 164.93 | ±0.01 | |
68 | 鉺 | Er | 167.26 | ±0.01 | |
69 | 銩 | Tm | 168.93 | ±0.01 | |
70 | 鐿 | Yb | 173.05 | ±0.02 | |
71 | 鑥 | Lu | 174.97 | ±0.01 | |
72 | 鉿 | Hf | 178.49 | ±0.01 | |
73 | 鉭 | Ta | 180.95 | ±0.01 | |
74 | 鎢 | W | 183.84 | ±0.01 | |
75 | 錸 | Re | 186.21 | ±0.01 | |
76 | 鋨 | Os | 190.23 | ±0.03 | |
77 | 銥 | Ir | 192.22 | ±0.01 | |
78 | 鉑 | Pt | 195.08 | ±0.02 | |
79 | 金 | Au | 196.97 | ±0.01 | |
80 | 汞 | Hg | 200.59 | ±0.01 | |
81 | 鉈 | Tl | 204.38 | ±0.01 | |
82 | 鉛 | Pb | 207.2 | ±1.1 | |
83 | 鉍 | Bi | 208.98 | ±0.01 | |
84 | 釙 | Po | [209] | ||
85 | 砹 | At | [210] | ||
86 | 氡 | Rn | [222] | ||
87 | 鍅 | Fr | [223] | ||
88 | 鐳 | Ra | [226] | ||
89 | 錒 | Ac | [227] | ||
90 | 釷 | Th | 232.04 | ±0.01 | |
91 | 鏷 | Pa | 231.04 | ±0.01 | |
92 | 鈾 | U | 238.03 | ±0.01 | |
93 | 錼 | Np | [237] | ||
94 | 鈽 | Pu | [244] | ||
95 | 鋂 | Am | [243] | ||
96 | 鋦 | Cm | [247] | ||
97 | 鉳 | Bk | [247] | ||
98 | 鉲 | Cf | [251] | ||
99 | 鑀 | Es | [252] | ||
100 | 鐨 | Fm | [257] | ||
101 | 鍆 | Md | [258] | ||
102 | 鍩 | No | [259] | ||
103 | 鐒 | Lr | [262] | ||
104 | 鑪 | Rf | [267] | ||
105 | 𨧀 | Db | [268] | ||
106 | 𨭎 | Sg | [269] | ||
107 | 𨨏 | Bh | [270] | ||
108 | 𨭆 | Hs | [269] | ||
109 | 䥑 | Mt | [277] | ||
110 | 鐽 | Ds | [281] | ||
111 | 錀 | Rg | [282] | ||
112 | 鎶 | Cn | [285] | ||
113 | 鉨 | Nh | [286] | ||
114 | 鈇 | Fl | [290] | ||
115 | 鏌 | Mc | [290] | ||
116 | 鉝 | Lv | [293] | ||
117 | 鿬 | Ts | [294] | ||
118 | 鿫 | Og | [294] |