氯的同位素

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。

 圖表 

|-
| 28Cl
| style="text-align:right" | 17
| style="text-align:right" | 11
| 28.02851(54)#
|
| 
| 27S
| (1+)#
|
|
|-
| 29Cl
| style="text-align:right" | 17
| style="text-align:right" | 12
| 29.01411(21)#
| <20 ns
| p
| 28S
| (3/2+)#
|
|
|-
| 30Cl
| style="text-align:right" | 17
| style="text-align:right" | 13
| 30.00477(21)#
| <30 ns
| p
| 29S
| (3+)#
|
|
|-
| rowspan=2|31Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 14
| rowspan=2|30.99241(5)
| rowspan=2|150(25) ms
| β+ (99.3%)
| 31S
| rowspan=2|3/2+
| rowspan=2|
| rowspan=2|
|-
| β+, p (.7%)
| 30P
|-
| rowspan=3|32Cl
| rowspan=3 style="text-align:right" | 17
| rowspan=3 style="text-align:right" | 15
| rowspan=3|31.985690(7)
| rowspan=3|298(1) ms
| β+ (99.92%)
| 32S
| rowspan=3|1+
| rowspan=3|
| rowspan=3|
|-
| β+, α (.054%)
| 28Si
|-
| β+, p (.026%)
| 31P
|-
| 33Cl
| style="text-align:right" | 17
| style="text-align:right" | 16
| 32.9774519(5)
| 2.511(3) s
| β+
| 33S
| 3/2+
|
|
|-
| 34Cl
| style="text-align:right" | 17
| style="text-align:right" | 17
| 33.97376282(19)
| 1.5264(14) s
| β+
| 34S
| 0+
|
|
|-
| rowspan=2 style="text-indent:1em" | 34mCl
| rowspan=2 colspan="3" style="text-indent:2em" | 146.36(3) keV
| rowspan=2|32.00(4) min
| β+ (55.4%)
| 34S
| rowspan=2|3+
| rowspan=2|
| rowspan=2|
|-
| IT (44.6%)
| 34Cl
|-
| 
| style="text-align:right" | 17
| style="text-align:right" | 18
| 34.96885268(4)
| colspan=3 align=center|
| 3/2+
| 0.7576(10)
| 0.75644–0.75923
|-
| rowspan=2|Used in 放射性定年法 water
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 19
| rowspan=2|35.96830698(8)
| rowspan=2|3.01(2)×105 y
| β− (98.1%)
| 36Ar
| rowspan=2|2+
| rowspan=2|痕量
| rowspan=2|約為 7x10−13
|-
| ε (1.9%)
| 36S
|-
| 
| style="text-align:right" | 17
| style="text-align:right" | 20
| 36.96590259(5)
| colspan=3 align=center|穩定
| 3/2+
| 0.2424(10)
| 0.24077–0.24356
|-
| 38Cl
| style="text-align:right" | 17
| style="text-align:right" | 21
| 37.96801043(10)
| 37.24(5) min
| β−
| 38Ar
| 2−
|
|
|-
| style="text-indent:1em" | 38mCl
| colspan="3" style="text-indent:2em" | 671.361(8) keV
| 715(3) ms
| IT
| 38Cl
| 5−
|
|
|-
| 39Cl
| style="text-align:right" | 17
| style="text-align:right" | 22
| 38.9680082(19)
| 55.6(2) min
| β−
| 39Ar
| 3/2+
|
|
|-
| 40Cl
| style="text-align:right" | 17
| style="text-align:right" | 23
| 39.97042(3)
| 1.35(2) min
| β−
| 40Ar
| 2−
|
|
|-
| 41Cl
| style="text-align:right" | 17
| style="text-align:right" | 24
| 40.97068(7)
| 38.4(8) s
| β−
| 41Ar
| (1/2+,3/2+)
|
|
|-
| 42Cl
| style="text-align:right" | 17
| style="text-align:right" | 25
| 41.97325(15)
| 6.8(3) s
| β−
| 42Ar
|
|
|
|-
| rowspan=2|43Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 26
| rowspan=2|42.97405(17)
| rowspan=2|3.07(7) s
| β− (>99.9%)
| 43Ar
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β−, n (<.1%)
| 42Ar
|-
| rowspan=2|44Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 27
| rowspan=2|43.97828(12)
| rowspan=2|0.56(11) s
| β− (92%)
| 44Ar
| rowspan=2|
| rowspan=2|
| rowspan=2|
|-
| β−, n (8%)
| 43Ar
|-
| rowspan=2|45Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 28
| rowspan=2|44.98029(13)
| rowspan=2|400(40) ms
| β− (76%)
| 45Ar
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β−, n (24%)
| 44Ar
|-
| rowspan=2|46Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 29
| rowspan=2|45.98421(77)
| rowspan=2|232(2) ms
| β−, n (60%)
| 45Ar
| rowspan=2|
| rowspan=2|
| rowspan=2|
|-
| β− (40%)
| 46Ar
|-
| rowspan=2|47Cl
| rowspan=2 style="text-align:right" | 17
| rowspan=2 style="text-align:right" | 30
| rowspan=2|46.98871(64)#
| rowspan=2|101(6) ms
| β− (97%)
| 47Ar
| rowspan=2|3/2+#
| rowspan=2|
| rowspan=2|
|-
| β−, n (3%)
| 46Ar
|-
| 48Cl
| style="text-align:right" | 17
| style="text-align:right" | 31
| 47.99495(75)#
| 100# ms [>200 ns]
| β−
| 48Ar
|
|
|
|-
| 49Cl
| style="text-align:right" | 17
| style="text-align:right" | 32
| 49.00032(86)#
| 50# ms [>200 ns]
| β−
| 49Ar
| 3/2+#
|
|
|-
| 50Cl
| style="text-align:right" | 17
| style="text-align:right" | 33
| 50.00784(97)#
| 20# ms
| β−
| 50Ar
|
|
|
|-
| 51Cl
| style="text-align:right" | 17
| style="text-align:right" | 34
| 51.01449(107)#
| 2# ms [>200 ns]
| β−
| 51Ar
| 3/2+#
|
|
|}

参考文獻

 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.

Cl
Category:氯