磷（原子量：30.973761998(5)）共有23個同位素，其中31P是穩定的，其他都具有放射性。30P是人類獲得的第一種人工放射性同位素。
圖表
|-
| rowspan=2|24P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 9
| rowspan=2|24.03435(54)#
| rowspan=2|無數據
| p (>99.9%)
| 23Si
| rowspan=2|(1+)#
| rowspan=2|
|-
| (24Si
|-
| 25P
| style="text-align:right" | 15
| style="text-align:right" | 10
| 25.02026(21)#
| 24Si
| (1/2+)#
|
|-
| rowspan=3|26P
| rowspan=3 style="text-align:right" | 15
| rowspan=3 style="text-align:right" | 11
| rowspan=3|26.01178(21)#
| rowspan=3|43.7(6) ms
| β+ (98.1%)
| 26Si
| rowspan=3|(3+)
| rowspan=3|
|-
| β+, 2p (1.0%)
| 24Mg
|-
| β+, p (.9%)
| 25Al
|-
| rowspan=2|27P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 12
| rowspan=2|26.999230(28)
| rowspan=2|260(80) ms
| β+ (99.93%)
| 27Si
| rowspan=2|1/2+
| rowspan=2|
|-
| β+, p (.07%)
| 26Al
|-
| rowspan=3|28P
| rowspan=3 style="text-align:right" | 15
| rowspan=3 style="text-align:right" | 13
| rowspan=3|27.992315(4)
| rowspan=3|270.3(5) ms
| β+ (99.99%)
| 28Si
| rowspan=3|3+
| rowspan=3|
|-
| β+, p (.0013%)
| 27Al
|-
| β+, α (8.6×10−4%)
| 24Mg
|-
| 29P
| style="text-align:right" | 15
| style="text-align:right" | 14
| 28.9818006(6)
| 4.142(15) s
| β+
| 29Si
| 1/2+
|
|-
| 30P
| style="text-align:right" | 15
| style="text-align:right" | 15
| 29.9783138(3)
| 2.498(4) min
| β+
| 30Si
| 1+
|
|-
|
| style="text-align:right" | 15
| style="text-align:right" | 16
| 30.97376163(20)
| colspan=3 align=center|**'
| 1/2+
| 1.0000
|-
|
| style="text-align:right" | 15
| style="text-align:right" | 17
| 31.97390727(20)
| 14.263(3) d
| β−
| 32S
| 1+
|痕量
|-
| 33P
| style="text-align:right" | 15
| style="text-align:right" | 18
| 32.9717255(12)
| 25.34(12) d
| β−
| 33S
| 1/2+
|
|-
| 34P
| style="text-align:right" | 15
| style="text-align:right" | 19
| 33.973636(5)
| 12.43(8) s
| β−
| 34S
| 1+
|
|-
| 35P
| style="text-align:right" | 15
| style="text-align:right" | 20
| 34.9733141(20)
| 47.3(7) s
| β−
| 35S
| 1/2+
|
|-
| 36P
| style="text-align:right" | 15
| style="text-align:right" | 21
| 35.978260(14)
| 5.6(3) s
| β−
| 36S
| 4−#
|
|-
| 37P
| style="text-align:right" | 15
| style="text-align:right" | 22
| 36.97961(4)
| 2.31(13) s
| β−
| 37S
| 1/2+#
|
|-
| rowspan=2|38P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 23
| rowspan=2|37.98416(11)
| rowspan=2|0.64(14) s
| β− (88%)
| 38S
| rowspan=2|
| rowspan=2|
|-
| β−, n (12%)
| 37S
|-
| rowspan=2|39P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 24
| rowspan=2|38.98618(11)
| rowspan=2|190(50) ms
| β− (74%)
| 39S
| rowspan=2|1/2+#
| rowspan=2|
|-
| β−, n (26%)
| 38S
|-
| rowspan=2|40P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 25
| rowspan=2|39.99130(15)
| rowspan=2|153(8) ms
| β− (70%)
| 40S
| rowspan=2|(2−,3−)
| rowspan=2|
|-
| β−, n (30%)
| 39S
|-
| rowspan=2|41P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 26
| rowspan=2|40.99434(23)
| rowspan=2|100(5) ms
| β− (70%)
| 41S
| rowspan=2|1/2+#
| rowspan=2|
|-
| β−, n (30%)
| 40S
|-
| rowspan=2|42P
| rowspan=2 style="text-align:right" | 15
| rowspan=2 style="text-align:right" | 27
| rowspan=2|42.00101(48)
| rowspan=2|48.5(15) ms
| β− (50%)
| 42S
| rowspan=2|
| rowspan=2|
|-
| β−, n (50%)
| 41S
|-
| 43P
| style="text-align:right" | 15
| style="text-align:right" | 28
| 43.00619(104)
| 36.5(15) ms
| β−, n
| 42S
| 1/2+#
|
|-
| 44P
| style="text-align:right" | 15
| style="text-align:right" | 29
| 44.01299(75)#
| 18.5(25) ms
| β−
| 44S
|
|
|-
| 45P
| style="text-align:right" | 15
| style="text-align:right" | 30
| 45.01922(86)#
| 8# ms [>200 ns]
| β−
| 45S
| 1/2+#
|
|-
| 46P
| style="text-align:right" | 15
| style="text-align:right" | 31
| 46.02738(97)#
| 4# ms [>200 ns]
| β−
| 46S
|
|
|}
参考文献
- Isotope masses from [https://web.archive.org/web/20080923134436/http://www.nndc.bnl.gov/amdc/index.html Ame2003 Atomic Mass Evaluation] by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
** Audi, Bersillon, Blachot, Wapstra. [http://amdc.in2p3.fr/web/nubase_en.html 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 [http://www.nndc.bnl.gov/nudat2/ 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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