维基百科,自由的百科全书
- 本相对原子质量表按照原子序数排列。
- 本表数据源自2005年IUPAC元素周期表(IUPAC 2005 standard atomic weights),以12C=12为标准。
- 本表方括号内的原子质量为放射性元素的半衰期最长的同位素质量数。
- 相对原子质量末位数的不确定度加注在其后的括号内。
- 112-118号元素数据未被IUPAC确定。
原子序数 |
元素名称 |
元素符号 |
相对原子质量 |
1 |
氢 |
H |
1.007 94(7) |
2 |
氦 |
He |
4.002 602(2) |
3 |
锂 |
Li |
6.941(2) |
4 |
铍 |
Be |
9.012 182(3) |
5 |
硼 |
B |
10.811(7) |
6 |
碳 |
C |
12.017(8) |
7 |
氮 |
N |
14.006 7(2) |
8 |
氧 |
O |
15.999 4(3) |
9 |
氟 |
F |
18.998 403 2(5) |
10 |
氖 |
Ne |
20.179 7(6) |
11 |
钠 |
Na |
22.989 769 28(2) |
12 |
镁 |
Mg |
24.305 0(6) |
13 |
铝 |
Al |
26.981 538 6(8) |
14 |
硅 |
Si |
28.085 5(3) |
15 |
磷 |
P |
30.973 762(2) |
16 |
硫 |
S |
32.065(5) |
17 |
氯 |
Cl |
35.453(2) |
18 |
氩 |
Ar |
39.948(1) |
19 |
钾 |
K |
39.098 3(1) |
20 |
钙 |
Ca |
40.078(4) |
21 |
钪 |
Sc |
44.955 912(6) |
22 |
钛 |
Ti |
47.867(1) |
23 |
钒 |
V |
50.941 5(1) |
24 |
铬 |
Cr |
51.996 1(6) |
25 |
锰 |
Mn |
54.938 045(5) |
26 |
铁 |
Fe |
55.845(2) |
27 |
钴 |
Co |
58.933 195(5) |
28 |
镍 |
Ni |
58.693 4(2) |
29 |
铜 |
Cu |
63.546(3) |
30 |
锌 |
Zn |
65.409(4) |
31 |
镓 |
Ga |
69.723(1) |
32 |
锗 |
Ge |
72.64(1) |
33 |
砷 |
As |
74.921 60(2) |
34 |
硒 |
Se |
78.96(3) |
35 |
溴 |
Br |
79.904(1) |
36 |
氪 |
Kr |
83.798(2) |
37 |
铷 |
Rb |
85.467 8(3) |
38 |
锶 |
Sr |
87.62(1) |
39 |
钇 |
Y |
88.905 85(2) |
40 |
锆 |
Zr |
91.224(2) |
41 |
铌 |
Nb |
92.906 38(2) |
42 |
钼 |
Mo |
95.94(2) |
43 |
锝 |
Tc |
[97.9072] |
44 |
钌 |
Ru |
101.07(2) |
45 |
铑 |
Rh |
102.905 50(2) |
46 |
钯 |
Pd |
106.42(1) |
47 |
银 |
Ag |
107.868 2(2) |
48 |
镉 |
Cd |
112.411(8) |
49 |
铟 |
In |
114.818(3) |
50 |
锡 |
Sn |
118.710(7) |
51 |
锑 |
Sb |
121.760(1) |
52 |
碲 |
Te |
127.60(3) |
53 |
碘 |
I |
126.904 47(3) |
54 |
氙 |
Xe |
131.293(6) |
55 |
铯 |
Cs |
132.905 451 9(2) |
56 |
钡 |
Ba |
137.327(7) |
57 |
镧 |
La |
138.905 47(7) |
58 |
铈 |
Ce |
140.116(1) |
59 |
镨 |
Pr |
140.907 65(2) |
60 |
钕 |
Nd |
144.242(3) |
61 |
钷 |
Pm |
[145] |
62 |
钐 |
Sm |
150.36(2) |
63 |
铕 |
Eu |
151.964(1) |
64 |
钆 |
Gd |
157.25(3) |
65 |
铽 |
Tb |
158.925 35(2) |
66 |
镝 |
Dy |
162.500(1) |
67 |
钬 |
Ho |
164.930 32(2) |
68 |
铒 |
Er |
167.259(3) |
69 |
铥 |
Tm |
168.934 21(2) |
70 |
镱 |
Yb |
173.04(3) |
71 |
镥 |
Lu |
174.967(1) |
72 |
铪 |
Hf |
178.49(2) |
73 |
钽 |
Ta |
180.947 88(2) |
74 |
钨 |
W |
183.84(1) |
75 |
铼 |
Re |
186.207(1) |
76 |
锇 |
Os |
190.23(3) |
77 |
铱 |
Ir |
192.217(3) |
78 |
铂 |
Pt |
195.084(9) |
79 |
金 |
Au |
196.966 569(4) |
80 |
汞 |
Hg |
200.59(2) |
81 |
铊 |
Tl |
204.383 3(2) |
82 |
铅 |
Pb |
207.2(1) |
83 |
铋 |
Bi |
208.980 40(1) |
84 |
钋 |
Po |
[208.982 4] |
85 |
砹 |
At |
[209.987 1] |
86 |
氡 |
Rn |
[222.017 6] |
87 |
钫 |
Fr |
[223] |
88 |
镭 |
Re |
[226] |
89 |
锕 |
Ac |
[227] |
90 |
钍 |
Th |
232.038 06(2) |
91 |
镤 |
Pa |
231.035 88(2) |
92 |
铀 |
U |
238.028 91(3) |
93 |
镎 |
Np |
[237] |
94 |
钚 |
Pu |
[244] |
95 |
镅 |
Am |
[243] |
96 |
锔 |
Cm |
[247] |
97 |
锫 |
Bk |
[247] |
98 |
锎 |
Cf |
[251] |
99 |
锿 |
Es |
[252] |
100 |
镄 |
Fm |
[257] |
101 |
钔 |
Md |
[258] |
102 |
锘 |
No |
[259] |
103 |
铹 |
Lr |
[262] |
104 |
钅卢 |
Rf |
[261] |
105 |
钅杜 |
Db |
[262] |
106 |
钅喜 |
Sg |
[266] |
107 |
钅波 |
Bh |
[264] |
108 |
钅黑 |
Hs |
[277] |
109 |
钅麦 |
Mt |
[268] |
110 |
钅达 |
Ds |
[271] |
111 |
钅仑 |
Rg |
[272] |
112 |
|
Uub |
[285] |
113 |
|
Uut |
[284] |
114 |
|
Uuq |
[289] |
115 |
|
Uup |
[288] |
116 |
|
Uuh |
[292] |
117 |
|
Uus |
[291] |
118 |
|
Uuo |
[293] |
[编辑] 参见