Isotopes of bromine
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Bromine (Br) has two stable isotopes, 79Br and 81Br, and 30 known radioisotopes, the most stable of which is 77Br, with a half-life of 57.036 hours. Bromine and chlorine are the only halogens with more than one stable isotope.
Relative atomic mass: 79.904(1)
Table
nuclide symbol |
Z(p) | N(n) | isotopic mass (u) |
half-life | decay mode(s)[1][n 1] |
daughter isotope(s)[n 2] |
nuclear spin |
representative isotopic composition (mole fraction) |
range of natural variation (mole fraction) |
---|---|---|---|---|---|---|---|---|---|
excitation energy | |||||||||
66Br | 35 | 31 | p | 65Se | |||||
67Br | 35 | 32 | 66.96479(54)# | p | 66Se | 1/2−# | |||
68Br | 35 | 33 | 67.95852(38)# | <1.2 µs | p | 67Se | 3+# | ||
69Br | 35 | 34 | 68.95011(11)# | <24 ns | p | 68Se | 1/2−# | ||
70Br | 35 | 35 | 69.94479(33)# | 79.1(8) ms | β+ | 70Se | 0+# | ||
70mBr | 2292.2(8) keV | 2.2(2) s | β+ | 70Se | (9+) | ||||
IT | 70Br | ||||||||
71Br | 35 | 36 | 70.93874(61) | 21.4(6) s | β+ | 71Se | (5/2)− | ||
72Br | 35 | 37 | 71.93664(6) | 78.6(24) s | β+ | 72Se | 1+ | ||
72mBr | 100.92(3) keV | 10.6(3) s | IT (>99.9%) | 72Br | 1− | ||||
β+ (<0.1%) | 72Se | ||||||||
73Br | 35 | 38 | 72.93169(5) | 3.4(2) min | β+ | 73Se | 1/2− | ||
74Br | 35 | 39 | 73.929891(16) | 25.4(3) min | β+ | 74Se | (0−) | ||
74mBr | 13.58(21) keV | 46(2) min | β+ | 74Se | 4(+#) | ||||
75Br | 35 | 40 | 74.925776(15) | 96.7(13) min | β+ | 75Se | 3/2− | ||
76Br | 35 | 41 | 75.924541(10) | 16.2(2) h | β+ | 76Se | 1− | ||
76mBr | 102.58(3) keV | 1.31(2) s | IT (99.4%) | 76Br | (4)+ | ||||
β+ (0.6%) | 76Se | ||||||||
77Br | 35 | 42 | 76.921379(3) | 57.036(6) h | β+ | 77Se | 3/2− | ||
77mBr | 105.86(8) keV | 4.28(10) min | IT | 77Br | 9/2+ | ||||
78Br | 35 | 43 | 77.921146(4) | 6.46(4) min | β+ (99.99%) | 78Se | 1+ | ||
β− (0.01%) | 78Kr | ||||||||
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 | IT | 79Br | (9/2+) | ||||
80Br | 35 | 45 | 79.9185293(22) | 17.68(2) min | β− (91.7%) | 80Kr | 1+ | ||
β+ (8.3%) | 80Se | ||||||||
80mBr | 85.843(4) keV | 4.4205(8) h | IT | 80Br | 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 | β− | 82Kr | 5− | ||
82mBr | 45.9492(10) keV | 6.13(5) min | IT | 82Br | 2− | ||||
β− | 82Kr | ||||||||
83Br | 35 | 48 | 82.915180(5) | 2.40(2) h | β− | 83Kr | 3/2− | ||
83mBr | 3068.8(6) keV | 700(100) ns | (19/2−) | ||||||
84Br | 35 | 49 | 83.916479(16) | 31.80(8) min | β− | 84Kr | 2− | ||
84m1Br | 320(10) keV | 6.0(2) min | β− | 84Kr | 6− | ||||
84m2Br | 408.2(4) keV | <140 ns | 1+ | ||||||
85Br | 35 | 50 | 84.915608(21) | 2.90(6) min | β− | 85Kr | 3/2− | ||
86Br | 35 | 51 | 85.918798(12) | 55.1(4) s | β− | 86Kr | (2−) | ||
87Br | 35 | 52 | 86.920711(19) | 55.65(13) s | β− (97.48%) | 87Kr | 3/2− | ||
β−, n (2.52%) | 86Kr | ||||||||
88Br | 35 | 53 | 87.92407(4) | 16.29(6) s | β− (93.42%) | 88Kr | (2−) | ||
β−, n (6.48%) | 87Kr | ||||||||
88mBr | 272.7(3) keV | 5.4(7) µs | |||||||
89Br | 35 | 54 | 88.92639(6) | 4.40(3) s | β− (86.2%) | 89Kr | (3/2−,5/2−) | ||
β−, n (13.8%) | 88Kr | ||||||||
90Br | 35 | 55 | 89.93063(8) | 1.91(1) s | β− (74.8%) | 90Kr | |||
β−, n (25.2%) | 89Kr | ||||||||
91Br | 35 | 56 | 90.93397(8) | 541(5) ms | β− (80%) | 91Kr | 3/2−# | ||
β−, n (20%) | 90Kr | ||||||||
92Br | 35 | 57 | 91.93926(5) | 0.343(15) s | β− (66.9%) | 92Kr | (2−) | ||
β−, n (33.1%) | 91Kr | ||||||||
93Br | 35 | 58 | 92.94305(32)# | 102(10) ms | β− (89%) | 93Kr | 3/2−# | ||
β−, n (11%) | 92Kr | ||||||||
94Br | 35 | 59 | 93.94868(43)# | 70(20) ms | β− (70%) | 94Kr | |||
β−, n (30%) | 93Kr | ||||||||
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−# |
- ↑ Abbreviations:
IT: Isomeric transition - ↑ Bold for stable isotopes
Notes
- Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC, which use expanded uncertainties.
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- Isotope masses from:
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- Isotopic compositions and standard atomic masses from:
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- Lua error in package.lua at line 80: module 'strict' not found.
- Half-life, spin, and isomer data selected from the following sources. See editing notes on this article's talk page.
- Lua error in package.lua at line 80: module 'strict' not found.
- Lua error in package.lua at line 80: module 'strict' not found.
- Lua error in package.lua at line 80: module 'strict' not found.
Isotopes of selenium | Isotopes of bromine | Isotopes of krypton |
Table of nuclides |
Isotopes of the chemical elements | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 H |
2 He |
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3 Li |
4 Be |
5 B |
6 C |
7 N |
8 O |
9 F |
10 Ne |
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11 Na |
12 Mg |
13 Al |
14 Si |
15 P |
16 S |
17 Cl |
18 Ar |
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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 |
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 |
55 Cs |
56 Ba |
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 |
|
87 Fr |
88 Ra |
104 Rf |
105 Db |
106 Sg |
107 Bh |
108 Hs |
109 Mt |
110 Ds |
111 Rg |
112 Cn |
113 Uut |
114 Fl |
115 Uup |
116 Lv |
117 Uus |
118 Uuo |
|
57 La |
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 |
|||
89 Ac |
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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