鏷的同位素

鏷的同位素均具有放射性，其中最穩定的為231Pa，質量数在231以下的同位素主要發生α衰變生成錒，而質量数超過231的主要發生β衰變生成鈾。

圖表

|-
| 210Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 119
| 
| 
| 
| 206Ac
| 3+
|
|-
| 211Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 120
| 211.023674(75)
| 6(3) ms
| 
| 207Ac
| 9/2−
|
|-
| 212Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 121
| 212.02320(8)
| 8(5) ms[5.1(+61−19) ms]
|
|
| 7+#
|
|-
| 213Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 122
| 213.02111(8)
| 7(3) ms[5.3(+40−16) ms]
| 
| 209Ac
| 9/2−#
|
|-
| 214Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 123
| 214.02092(8)
| 17(3) ms
| 
| 210Ac
|
|
|-
| 215Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 124
| 215.01919(9)
| 14(2) ms
| 
| 211Ac
| 9/2−#
|
|-
| rowspan=2|216Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 125
| rowspan=2|216.01911(8)
| rowspan=2|105(12) ms
|  (80%)
| 212Ac
| rowspan=2|
| rowspan=2|
|-
|  (20%)
| 216Th
|-
| 217Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 126
| 217.01832(6)
| 3.48(9) ms
| 
| 213Ac
| 9/2−#
|
|-
| rowspan=2 style="text-indent:1em" | 217mPa
| rowspan=2|
| rowspan=2 colspan="3" style="text-indent:2em" | 1860(7) keV
| rowspan=2|1.08(3) ms
| 
| 213Ac
| rowspan=2|29/2+#
| rowspan=2|
|-
| IT （不常見）
| 217Pa
|-
| 218Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 127
| 218.020042(26)
| 0.113(1) ms
| 
| 214Ac
|
|
|-
| rowspan=2|219Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 128
| rowspan=2|219.01988(6)
| rowspan=2|53(10) ns
| 
| 215Ac
| rowspan=2|9/2−
| rowspan=2|
|-
|  (5×10−9%)
| 219Th
|-
| 220Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 129
| 220.02188(6)
| 780(160) ns
| 
| 216Ac
| 1−#
|
|-
| 221Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 130
| 221.02188(6)
| 4.9(8) µs
| 
| 217Ac
| 9/2−
|
|-
| 222Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 131
| 222.02374(8)#
| 3.2(3) ms
| 
| 218Ac
|
|
|-
| rowspan=2|223Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 132
| rowspan=2|223.02396(8)
| rowspan=2|5.1(6) ms
| 
| 219Ac
| rowspan=2|
| rowspan=2|
|-
|  (.001%)
| 223Th
|-
| rowspan=2|224Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 133
| rowspan=2|224.025626(17)
| rowspan=2|844(19) ms
|  (99.9%)
| 220Ac
| rowspan=2|5−#
| rowspan=2|
|-
|  (.1%)
| 224Th
|-
| 225Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 134
| 225.02613(8)
| 1.7(2) s
| 
| 221Ac
| 5/2−#
|
|-
| rowspan=2|226Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 135
| rowspan=2|226.027948(12)
| rowspan=2|1.8(2) min
|  (74%)
| 222Ac
| rowspan=2|
| rowspan=2|
|-
|  (26%)
| 226Th
|-
| rowspan=2|227Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 136
| rowspan=2|227.028805(8)
| rowspan=2|38.3(3) min
|  (85%)
| 223Ac
| rowspan=2|(5/2−)
| rowspan=2|
|-
|  (15%)
| 227Th
|-
| rowspan=2|228Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 137
| rowspan=2|228.031051(5)
| rowspan=2|22(1) h
|  (98.15%)
| 228Th
| rowspan=2|3+
| rowspan=2|
|-
|  (1.85%)
| 224Ac
|-
| rowspan=2|229Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 138
| rowspan=2|229.0320968(30)
| rowspan=2|1.50(5) d
|  (99.52%)
| 229Th
| rowspan=2|(5/2+)
| rowspan=2|
|-
|  (.48%)
| 225Ac
|-
| style="text-indent:1em" | 229mPa
|
| colspan="3" style="text-indent:2em" | 11.6(3) keV
| 420(30) ns
|
|
| 3/2−
|
|-
| rowspan=3|230Pa
| rowspan=3|
| rowspan=3 style="text-align:right" | 91
| rowspan=3 style="text-align:right" | 139
| rowspan=3|230.034541(4)
| rowspan=3|17.4(5) d
|  (91.6%)
| 230Th
| rowspan=3|(2−)
| rowspan=3|
|-
|  (8.4%)
| 230U
|-
|  (.00319%)
| 226Ac
|-
| rowspan=4|231Pa
| rowspan=4|Protoactinium
| rowspan=4 style="text-align:right" | 91
| rowspan=4 style="text-align:right" | 140
| rowspan=4|231.0358840(24)
| rowspan=4|3.276(11)×104 y
| 
| 227Ac
| rowspan=4|3/2−
| rowspan=4|1.0000235U的衰变产物
|-
|  (1.34×10−9%)
| 207Tl24Ne
|-
|  (3×10−10%)
| (various)
|-
| CD (10−12%)
| 208Pb23F
|-
| rowspan=2|232Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 141
| rowspan=2|232.038592(8)
| rowspan=2|1.31(2) d
| 
| 232U
| rowspan=2|(2−)
| rowspan=2|
|-
|  (.003%)
| 232Th
|-
| 233Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 142
| 233.0402473(23)
| 26.975(13) d
| 
| 233U
| 3/2−
|痕量237Np的衰变产物
|-
| rowspan=2|234Pa
| rowspan=2|Uranium Z
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 143
| rowspan=2|234.043308(5)
| rowspan=2|6.70(5) h
| 
| 234U
| rowspan=2|4+
| rowspan=2|痕量238U的衰变产物
|-
| SF (3×10−10%)
| (various)
|-
| rowspan=3 style="text-indent:1em" | 234mPa
| rowspan=3|Uranium X2Brevium
| rowspan=3 colspan="3" style="text-indent:2em" | 78(3) keV
| rowspan=3|1.17(3) min
|  (99.83%)
| 234U
| rowspan=3|(0−)
| rowspan=3|痕量
|-
| IT (.16%)
| 234Pa
|-
| SF (10−10%)
| (various)
|-
| 235Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 144
| 235.04544(5)
| 24.44(11) min
| 
| 235U
| (3/2−)
|
|-
| rowspan=2|236Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 145
| rowspan=2|236.04868(21)
| rowspan=2|9.1(1) min
| 
| 236U
| rowspan=2|1(−)
| rowspan=2|
|-
| , SF (6×10−8%)
| (various)
|-
| 237Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 146
| 237.05115(11)
| 8.7(2) min
| 
| 237U
| (1/2+)
|
|-
| rowspan=2|238Pa
| rowspan=2|
| rowspan=2 style="text-align:right" | 91
| rowspan=2 style="text-align:right" | 147
| rowspan=2|238.05450(6)
| rowspan=2|2.27(9) min
| 
| 238U
| rowspan=2|(3−)#
| rowspan=2|
|-
| , SF (2.6×10−6%)
| (various)
|-
| 239Pa
|
| style="text-align:right" | 91
| style="text-align:right" | 148
| 239.05726(21)#
| 1.8(5) h
| 
| 239U
| (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).
 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.

Pa
category:镤