推荐回答(2个)
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。
原子量加方括号的为放射性元素的半衰期最长的同位素的质量数
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
12.010
7(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)
原子序数
元素名称
元素符号
相对原子质量
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)
原子序数
元素名称
元素符号
相对原子质量
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]
原子序数
元素名称
元素符号
相对原子质量
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]
(注*的是人造元素)
原子序数
元素名称
元素符号
相对原子质量
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
鐽*
Ds
[281]
111
錀*
Rg
[272]
原子序数
元素名称
元素符号
相对原子质量
112
暂无
Cn
[285]
113
暂无
Uut
[284]
114
暂无
Uuq
[289]
115
暂无
Uup
[288]
116
暂无
Uuh
[292]
117
暂无
Uus
[291]
118
暂无
Uuo
[293]
可以在简单计算题中直接代入使用

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