出典: フリー百科事典『ウィキペディア（Wikipedia）』
臭素（Br）
標準原子量: 79.904(1) u
| 同位体核種
|
Z(p)
|
N(n)
|
同位体質量 (u)
|
半減期
|
核スピン数
|
天然存在比
|
天然存在比
(範囲)
|
| 励起エネルギー
|
| 67Br
|
35
|
32
|
66.96479(54)#
|
|
1/2-#
|
|
|
| 68Br
|
35
|
33
|
67.95852(38)#
|
<1.2 µs
|
3+#
|
|
|
| 69Br
|
35
|
34
|
68.95011(11)#
|
<24 ns
|
1/2-#
|
|
|
| 70Br
|
35
|
35
|
69.94479(33)#
|
79.1(8) ms
|
0+#
|
|
|
| 70mBr
|
2292.2(8) keV
|
2.2(2) s
|
(9+)
|
|
|
| 71Br
|
35
|
36
|
70.93874(61)
|
21.4(6) s
|
(5/2)-
|
|
|
| 72Br
|
35
|
37
|
71.93664(6)
|
78.6(24) s
|
1+
|
|
|
| 72mBr
|
100.92(3) keV
|
10.6(3) s
|
1-
|
|
|
| 73Br
|
35
|
38
|
72.93169(5)
|
3.4(2) min
|
1/2-
|
|
|
| 74Br
|
35
|
39
|
73.929891(16)
|
25.4(3) min
|
(0-)
|
|
|
| 74mBr
|
13.58(21) keV
|
46(2) min
|
4(+#)
|
|
|
| 75Br
|
35
|
40
|
74.925776(15)
|
96.7(13) min
|
3/2-
|
|
|
| 76Br
|
35
|
41
|
75.924541(10)
|
16.2(2) h
|
1-
|
|
|
| 76mBr
|
102.58(3) keV
|
1.31(2) s
|
(4)+
|
|
|
| 77Br
|
35
|
42
|
76.921379(3)
|
57.036(6) h
|
3/2-
|
|
|
| 77mBr
|
105.86(8) keV
|
4.28(10) min
|
9/2+
|
|
|
| 78Br
|
35
|
43
|
77.921146(4)
|
6.46(4) min
|
1+
|
|
|
| 78mBr
|
180.82(13) keV
|
119.2(10) µs
|
(4+)
|
|
|
| 79Br
|
35
|
44
|
78.9183371(22)
|
STABLE
|
3/2-
|
0.5069(7)
|
|
| 79mBr
|
207.61(9) keV
|
4.86(4) s
|
(9/2+)
|
|
|
| 80Br
|
35
|
45
|
79.9185293(22)
|
17.68(2) min
|
1+
|
|
|
| 80mBr
|
85.843(4) keV
|
4.4205(8) h
|
5-
|
|
|
| 81Br
|
35
|
46
|
80.9162906(21)
|
STABLE
|
3/2-
|
0.4931(7)
|
|
| 81mBr
|
536.20(9) keV
|
34.6(28) µs
|
9/2+
|
|
|
| 82Br
|
35
|
47
|
81.9168041(21)
|
35.282(7) h
|
5-
|
|
|
| 82mBr
|
45.9492(10) keV
|
6.13(5) min
|
2-
|
|
|
| 83Br
|
35
|
48
|
82.915180(5)
|
2.40(2) h
|
3/2-
|
|
|
| 83mBr
|
3068.8(6) keV
|
700(100) ns
|
(19/2-)
|
|
|
| 84Br
|
35
|
49
|
83.916479(16)
|
31.80(8) min
|
2-
|
|
|
| 84m1Br
|
320(10) keV
|
6.0(2) min
|
6-
|
|
|
| 84m2Br
|
408.2(4) keV
|
<140 ns
|
1+
|
|
|
| 85Br
|
35
|
50
|
84.915608(21)
|
2.90(6) min
|
3/2-
|
|
|
| 86Br
|
35
|
51
|
85.918798(12)
|
55.1(4) s
|
(2-)
|
|
|
| 87Br
|
35
|
52
|
86.920711(19)
|
55.65(13) s
|
3/2-
|
|
|
| 88Br
|
35
|
53
|
87.92407(4)
|
16.29(6) s
|
(2-)
|
|
|
| 88mBr
|
272.7(3) keV
|
5.4(7) µs
|
|
|
|
| 89Br
|
35
|
54
|
88.92639(6)
|
4.40(3) s
|
(3/2-,5/2-)
|
|
|
| 90Br
|
35
|
55
|
89.93063(8)
|
1.91(1) s
|
|
|
|
| 91Br
|
35
|
56
|
90.93397(8)
|
541(5) ms
|
3/2-#
|
|
|
| 92Br
|
35
|
57
|
91.93926(5)
|
0.343(15) s
|
(2-)
|
|
|
| 93Br
|
35
|
58
|
92.94305(32)#
|
102(10) ms
|
3/2-#
|
|
|
| 94Br
|
35
|
59
|
93.94868(43)#
|
70(20) ms
|
|
|
|
| 95Br
|
35
|
60
|
94.95287(54)#
|
50# ms [>300 ns]
|
3/2-#
|
|
|
| 96Br
|
35
|
61
|
95.95853(75)#
|
20# ms [>300 ns]
|
|
|
|
| 97Br
|
35
|
62
|
96.96280(86)#
|
10# ms [>300 ns]
|
3/2-#
|
|
|
- Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.
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