釙的同位素

釙有42個已知的同位素，都具有放射性，目前已觀測到的釙同位素質量數在186到227之間，其中有9個屬於痕量存在的天然放射性核素，當中以210最為穩定。至於比210更加穩定的209和208只能在迴旋加速器中人工轟擊而成。

**圖表**
188Po
84
104
187.999422(21)
430(180) µs0.40(+20−15) ms
0+
189Po
84
105
188.998481(24)
5(1) ms
3/2−#
190Po
84
106
189.995101(14)
2.46(5) ms
α (99.9%)
186Pb
0+
β+ (.1%)
190Bi
191Po
84
107
190.994574(12)
22(1) ms
α
187Pb
3/2−#
β+ （不常見）
191Bi
191mPo
130(21) keV
93(3) ms
(13/2+)
192Po
84
108
191.991335(13)
32.2(3) ms
α (99%)
188Pb
0+
β+ (1%)
192Bi
192mPo
2600(500)# keV
~1 µs
12+#
193Po
84
109
192.99103(4)
420(40) ms370(+46−40) ms
α
189Pb
3/2−#
β+ （不常見）
193Bi
193mPo
100(30)# keV
240(10) ms243(+11−10) ms
α
189Pb
(13/2+)
β+ （不常見）
193Bi
194Po
84
110
193.988186(13)
0.392(4) s
α
190Pb
0+
β+ （不常見）
194Bi
194mPo
2525(2) keV
15(2) µs
(11−)
195Po
84
111
194.98811(4)
4.64(9) s
α (75%)
191Pb
3/2−#
β+ (25%)
195Bi
195mPo
110(50) keV
1.92(2) s
α (90%)
191Pb
13/2+#
β+ (10%)
195Bi
IT (.01%)
195Po
196Po
84
112
195.985535(14)
5.56(12) s
α (94%)
192Pb
0+
β+ (6%)
196Bi
196mPo
2490.5(17) keV
850(90) ns
(11−)
197Po
84
113
196.98566(5)
53.6(10) s
β+ (54%)
197Bi
(3/2−)
α (44%)
193Pb
197mPo
230(80)# keV
25.8(1) s
α (84%)
193Pb
(13/2+)
β+ (16%)
197Bi
IT (.01%)
197Po
198Po
84
114
197.983389(19)
1.77(3) min
α (57%)
194Pb
0+
β+ (43%)
198Bi
198m1Po
2565.92(20) keV
200(20) ns
11−
198m2Po
2691.86(20) keV
750(50) ns
12+
199Po
84
115
198.983666(25)
5.48(16) min
β+ (92.5%)
199Bi
(3/2−)
α (7.5%)
195Pb
199mPo
312.0(28) keV
4.17(4) min
β+ (73.5%)
199Bi
13/2+
α (24%)
195Pb
IT (2.5%)
199Po
200Po
84
116
199.981799(15)
11.5(1) min
β+ (88.8%)
200Bi
0+
α (11.1%)
196Pb
201Po
84
117
200.982260(6)
15.3(2) min
β+ (98.4%)
201Bi
3/2−
α (1.6%)
197Pb
201mPo
424.1(24) keV
8.9(2) min
IT (56%)
201Po
13/2+
EC (41%)
201Bi
α (2.9%)
197Pb
202Po
84
118
201.980758(16)
44.7(5) min
β+ (98%)
202Bi
0+
α (2%)
198Pb
202mPo
2626.7(7) keV
>200 ns
11−
203Po
84
119
202.981420(28)
36.7(5) min
β+ (99.89%)
203Bi
5/2−
α (.11%)
199Pb
203m1Po
641.49(17) keV
45(2) s
IT (99.96%)
203Po
13/2+
α (.04%)
199Pb
203m2Po
2158.5(6) keV
>200 ns
204Po
84
120
203.980318(12)
3.53(2) h
β+ (99.33%)
204Bi
0+
α (.66%)
200Pb
205Po
84
121
204.981203(21)
1.66(2) h
β+ (99.96%)
205Bi
5/2−
α (.04%)
201Pb
205m1Po
143.166(17) keV
310(60) ns
1/2−
205m2Po
880.30(4) keV
645 µs
13/2+
205m3Po
1461.21(21) keV
57.4(9) ms
IT
205Po
19/2−
205m4Po
3087.2(4) keV
115(10) ns
29/2−
206Po
84
122
205.980481(9)
8.8(1) d
β+ (94.55%)
206Bi
0+
α (5.45%)
202Pb
206m1Po
1585.85(11) keV
222(10) ns
(8+)#
206m2Po
2262.22(14) keV
1.05(6) µs
(9−)#
207Po
84
123
206.981593(7)
5.80(2) h
β+ (99.97%)
207Bi
5/2−
α (.021%)
203Pb
207m1Po
68.573(14) keV
205(10) ns
1/2−
207m2Po
1115.073(16) keV
49(4) µs
13/2+
207m3Po
1383.15(6) keV
2.79(8) s
IT
207Po
19/2−
208Po
84
124
207.9812457(19)
2.898(2) y
α (99.99%)
204Pb
0+
β+ (.00277%)
208Bi
209Po
84
125
208.9824304(20)
124(3) yref
α (99.546%)
205Pb
1/2−
β+ (0.454%)
209Bi
210Po
Radium F
84
126
209.9828737(13)
138.376(2) d
α
206Pb
0+
痕量
210mPo
5057.61(4) keV
263(5) ns
16+
211Po
Actinium C'
84
127
210.9866532(14)
0.516(3) s
α
207Pb
9/2+
痕量
211m1Po
1462(5) keV
25.2(6) s
α (99.98%)
207Pb
(25/2+)
IT (.016%)
211Po
211m2Po
2135.7(9) keV
243(21) ns
(31/2−)
211m3Po
4873.3(17) keV
2.8(7) µs
(43/2+)
212Po
Thorium C'
84
128
211.9888680(13)
299(2) ns
α
208Pb
0+
痕量
212mPo
2911(12) keV
45.1(6) s
α (99.93%)
208Pb
(18+)
IT (.07%)
212Po
213Po
84
129
212.992857(3)
3.65(4) µs
α
209Pb
9/2+
痕量
214Po
Radium C'
84
130
213.9952014(16)
164.3(20) µs
α
210Pb
0+
痕量
215Po
Actinium A
84
131
214.9994200(27)
1.781(4) ms
α (99.99%)
211Pb
9/2+
痕量
β- (2.3×10−4%)
215At
216Po
Thorium A
84
132
216.0019150(24)
0.145(2) s
α
212Pb
0+
痕量
217Po
84
133
217.006335(7)
1.47(5) s
α (95%)
213Pb
5/2+#
β- (5%)
217At
218Po
Radium A
84
134
218.0089730(26)
3.10(1) min
α (99.98%)
214Pb
0+
痕量
β- (.02%)
218At
219Po
84
135
219.01361(16)
10.3(1) min
α (28.2%)
215Pb
9/2+#
β− (71.8%)
219At
220Po
84
136
220.0164(18)
40# s>300 ns
β−
220At
0+
221Po
84
137
221.02123(20)
2.2(0.7) min
β−
221At
9/2+#
222Po
84
138
222.024144(40)
9.1(7.2) min
β−
222At
0+

**參考文獻**
 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 date=20110716114059 , Nuc. Phys. A 729, pp. 3-128 (2003).
** National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the  NuDat 2.1 database date=20190513230730  (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.