銥的同位素

銥（原子量：192.217(2)）有兩個天然同位素以及34個放射性同位素。其中，最穩定的放射性同位素是銥，其半衰期有73.8天，以及其核同質異能素：銥，其半衰期長達241年，其餘同位素半衰期都在1年以下，大部分都少於一日。

## 圖表

164Ir

163.99220(44)#

1# ms

2−#

94(27) µs

9+#

p

164Os

α （不常見）

161Re

p (87%)

164Os

α (13%)

161Re

α (93%)

162Re

p (7%)

165Os

α (98.2%)

162Re

p (1.8%)

165Os

α (48%)

163Re

p (32%)

166Os

β+ (20%)

167Os

α (80%)

163Re

β+ (20%)

167Os

p (.4%)

166Os

α

164Re

β+ （不常見）

168Os

125(40) ms

α

164Re

low

α

165Re

β+ （不常見）

169Os

α (72%)

165Re

β+ (28%)

169Os

β+ (64%)

170Os

α (36%)

166Re

440(60) ms

high#

α (58%)

167Re

β+ (42%)

171Os

1.40(10) s

(11/2−)

β+ (98%)

172Os

α (2%)

168Re

β+ (77%)

172Os

α (23%)

168Re

β+ (93%)

173Os

α (7%)

169Re

β+ (88%)

173Os

α (12%)

169Re

β+ (99.5%)

174Os

α (.5%)

170Re

β+ (99.53%)

174Os

α (.47%)

170Re

β+ (99.15%)

175Os

α (.85%)

171Re

β+ (97.9%)

176Os

α (2.1%)

172Re

β+ (99.94%)

177Os

α (.06%)

173Re

178Ir

177.961082(21)

12(2) s

β+

178Os

179Ir

178.959122(12)

79(1) s

β+

179Os

(5/2)−

180Ir

179.959229(23)

1.5(1) min

β+

180Os

(4,5)(+#)

181Ir

180.957625(28)

4.90(15) min

β+

181Os

(5/2)−

182Ir

181.958076(23)

15(1) min

β+

182Os

(3+)

β+ ( 99.95%)

183Os

α (.05%)

179Re

184Ir

183.95748(3)

3.09(3) h

β+

184Os

5−

470(30) µs

3+

350(90) ns

(7)+

185Ir

184.95670(3)

14.4(1) h

β+

185Os

5/2−

186Ir

185.957946(18)

16.64(3) h

β+

186Os

5+

β+

186Os

IT （不常見）

186Ir

187Ir

186.957363(7)

10.5(3) h

β+

187Os

3/2+

30.3(6) ms

IT

187Ir

9/2−

152(12) ns

11/2−

188Ir

187.958853(8)

41.5(5) h

β+

188Os

1−

IT

188Ir

β+ （不常見）

188Os

189Ir

188.958719(14)

13.2(1) d

EC

189Os

3/2+

13.3(3) ms

IT

189Ir

11/2−

3.7(2) ms

(25/2)+

190Ir

189.9605460(18)

11.78(10) d

β+

190Os

4−

1.120(3) h

IT

190Ir

(1−)

>2 µs

(4)+

3.087(12) h

(11)−

191Ir

190.9605940(18)

觀測上穩定

3/2+

0.373(2)

0.3723(9)

4.94(3) s

IT

191Ir

11/2−

5.5(7) s

β- (95.24%)

192Pt

EC (4.76%)

192Os

1.45(5) min

1−

241(9) y

(11−)

193Ir

192.9629264(18)

觀測上穩定

3/2+

0.627(2)

0.6277(9)

10.53(4) d

IT

193Ir

11/2−

194Ir

193.9650784(18)

19.28(13) h

β-

194Pt

1−

31.85(24) ms

IT

194Ir

(4+)

171(11) d

(10,11)(−#)

195Ir

194.9659796(18)

2.5(2) h

β-

195Pt

3/2+

β- (95%)

195Pt

IT (5%)

195Ir

196Ir

195.96840(4)

52(1) s

β-

196Pt

(0−)

β- (99.7%)

196Pt

IT

196Ir

197Ir

196.969653(22)

5.8(5) min

β-

197Pt

3/2+

β- (99.75%)

197Pt

IT (.25%)

197Ir

198Ir

197.97228(21)#

8(1) s

β-

198Pt

199Ir

198.97380(4)

20# s

β-

199Pt

3/2+#

## 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 , 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.

## 基本資料

- infobox_name：iridium
- 貨幣符號：Ir
- 日語原文：銥
- standard atomic weight：192.217(2)