氯（原子質量單位：35.453(2)）共有26個同位素，其中有2個是穩定的。
Quick Facts 同位素, 衰變 ...
主要的氯同位素|
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| 標準原子質量 (Ar, 標準) | - [35.446, 35.457][1]
- 傳統: 35.45
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More information 符號, Z ...
| 符號
|
Z
|
N
|
同位素質量（u）
[n 1][n 2]
|
半衰期
[n 1][n 2]
|
衰變
方式[2]
|
衰變
產物
[n 3]
|
原子核
自旋[n 1]
|
相對豐度
（莫耳分率）[n 2]
|
相對豐度
的變化量
（莫耳分率）
|
| 激發能量[n 2]
|
| 28Cl
|
17
|
11
|
28.02851(54)#
|
|
p
|
27S
|
(1+)#
|
|
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| 29Cl
|
17
|
12
|
29.01411(21)#
|
<20 ns
|
p
|
28S
|
(3/2+)#
|
|
|
| 30Cl
|
17
|
13
|
30.00477(21)#
|
<30 ns
|
p
|
29S
|
(3+)#
|
|
|
| 31Cl
|
17
|
14
|
30.99241(5)
|
150(25) ms
|
β+ (99.3%)
|
31S
|
3/2+
|
|
|
| β+, p (.7%)
|
30P
|
| 32Cl
|
17
|
15
|
31.985690(7)
|
298(1) ms
|
β+ (99.92%)
|
32S
|
1+
|
|
|
| β+, α (.054%)
|
28Si
|
| β+, p (.026%)
|
31P
|
| 33Cl
|
17
|
16
|
32.9774519(5)
|
2.511(3) s
|
β+
|
33S
|
3/2+
|
|
|
| 34Cl
|
17
|
17
|
33.97376282(19)
|
1.5264(14) s
|
β+
|
34S
|
0+
|
|
|
| 34mCl
|
146.36(3) keV
|
32.00(4) min
|
β+ (55.4%)
|
34S
|
3+
|
|
|
| IT (44.6%)
|
34Cl
|
35
Cl
|
17
|
18
|
34.96885268(4)
|
穩定
|
3/2+
|
0.7576(10)
|
0.75644–0.75923
|
36
Cl
[n 4]
|
17
|
19
|
35.96830698(8)
|
3.01(2)×105 y
|
β− (98.1%)
|
36Ar
|
2+
|
痕量[n 5]
|
約為 7x10−13
|
| ε (1.9%)
|
36S
|
37
Cl
|
17
|
20
|
36.96590259(5)
|
穩定
|
3/2+
|
0.2424(10)
|
0.24077–0.24356
|
| 38Cl
|
17
|
21
|
37.96801043(10)
|
37.24(5) min
|
β−
|
38Ar
|
2−
|
|
|
| 38mCl
|
671.361(8) keV
|
715(3) ms
|
IT
|
38Cl
|
5−
|
|
|
| 39Cl
|
17
|
22
|
38.9680082(19)
|
55.6(2) min
|
β−
|
39Ar
|
3/2+
|
|
|
| 40Cl
|
17
|
23
|
39.97042(3)
|
1.35(2) min
|
β−
|
40Ar
|
2−
|
|
|
| 41Cl
|
17
|
24
|
40.97068(7)
|
38.4(8) s
|
β−
|
41Ar
|
(1/2+,3/2+)
|
|
|
| 42Cl
|
17
|
25
|
41.97325(15)
|
6.8(3) s
|
β−
|
42Ar
|
|
|
|
| 43Cl
|
17
|
26
|
42.97405(17)
|
3.07(7) s
|
β− (>99.9%)
|
43Ar
|
3/2+#
|
|
|
| β−, n (<.1%)
|
42Ar
|
| 44Cl
|
17
|
27
|
43.97828(12)
|
0.56(11) s
|
β− (92%)
|
44Ar
|
|
|
|
| β−, n (8%)
|
43Ar
|
| 45Cl
|
17
|
28
|
44.98029(13)
|
400(40) ms
|
β− (76%)
|
45Ar
|
3/2+#
|
|
|
| β−, n (24%)
|
44Ar
|
| 46Cl
|
17
|
29
|
45.98421(77)
|
232(2) ms
|
β−, n (60%)
|
45Ar
|
|
|
|
| β− (40%)
|
46Ar
|
| 47Cl
|
17
|
30
|
46.98871(64)#
|
101(6) ms
|
β− (97%)
|
47Ar
|
3/2+#
|
|
|
| β−, n (3%)
|
46Ar
|
| 48Cl
|
17
|
31
|
47.99495(75)#
|
100# ms [>200 ns]
|
β−
|
48Ar
|
|
|
|
| 49Cl
|
17
|
32
|
49.00032(86)#
|
50# ms [>200 ns]
|
β−
|
49Ar
|
3/2+#
|
|
|
| 50Cl
|
17
|
33
|
50.00784(97)#
|
20# ms
|
β−
|
50Ar
|
|
|
|
| 51Cl
|
17
|
34
|
51.01449(107)#
|
2# ms [>200 ns]
|
β−
|
51Ar
|
3/2+#
|
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Close
畫上#號的數據代表沒有經過實驗的証明，僅為理論推測。
- 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) （頁面存檔備份，存於網際網路檔案館）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) （頁面存檔備份，存於網際網路檔案館）.
- 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 （頁面存檔備份，存於網際網路檔案館）, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （頁面存檔備份，存於網際網路檔案館） (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.
