鋨的同位素

**主要的鋨同位素**
標準原子質量 (Ar, 標準)	190.23(3)[1];
←Re（75）	Ir（77）→

鋨（原子量：190.23(3)）的同位素，當中有4個是穩定的，以及3個天然放射性同位素184
Os、186
Os、192
Os，不過只有186
Os的半衰期為已知，另外兩個則只有下界。

圖表

符號	Z（p ）	N（n ）	同位素質量（u）	半衰期[n 1]	衰變方式[2][n 2]	衰變產物[n 3]	原子核自旋	相對豐度（莫耳分率）	相對豐度（莫耳分率）
符號	激發能量			半衰期[n 1]	衰變方式[2][n 2]	衰變產物[n 3]	原子核自旋	相對豐度（莫耳分率）	相對豐度（莫耳分率）
¹⁶¹Os	76	85		0.64(6) ms	α	¹⁵⁷W
¹⁶²Os	76	86	161.98443(54)#	1.87(18) ms	α	¹⁵⁸W	0+
¹⁶³Os	76	87	162.98269(43)#	5.5(6) ms	α	¹⁵⁹W	7/2−#
					β⁺, p （不常見）	¹⁶²W
					β⁺ （不常見）	¹⁶³Re
¹⁶⁴Os	76	88	163.97804(22)	21(1) ms	α (98%)	¹⁶⁰W	0+
¹⁶⁴Os	76	88	163.97804(22)	21(1) ms	β⁺ (2%)	¹⁶⁴Re	0+
¹⁶⁵Os	76	89	164.97676(22)#	71(3) ms	α (60%)	¹⁶¹W	(7/2−)
¹⁶⁵Os	76	89	164.97676(22)#	71(3) ms	β⁺ (40%)	¹⁶⁵Re	(7/2−)
¹⁶⁶Os	76	90	165.972691(20)	216(9) ms	α (72%)	¹⁶²W	0+
¹⁶⁶Os	76	90	165.972691(20)	216(9) ms	β⁺ (28%)	¹⁶⁶Re	0+
¹⁶⁷Os	76	91	166.97155(8)	810(60) ms	α (67%)	¹⁶³W	3/2−#
¹⁶⁷Os	76	91	166.97155(8)	810(60) ms	β⁺ (33%)	¹⁶⁷Re	3/2−#
¹⁶⁸Os	76	92	167.967804(13)	2.06(6) s	β⁺ (51%)	¹⁶⁸Re	0+
¹⁶⁸Os	76	92	167.967804(13)	2.06(6) s	α (49%)	¹⁶⁴W	0+
¹⁶⁹Os	76	93	168.967019(27)	3.40(9) s	β⁺ (89%)	¹⁶⁹Re	3/2−#
¹⁶⁹Os	76	93	168.967019(27)	3.40(9) s	α (11%)	¹⁶⁵W	3/2−#
¹⁷⁰Os	76	94	169.963577(12)	7.46(23) s	β⁺ (91.4%)	¹⁷⁰Re	0+
¹⁷⁰Os	76	94	169.963577(12)	7.46(23) s	α (8.6%)	¹⁷⁶W	0+
¹⁷¹Os	76	95	170.963185(20)	8.3(2) s	β⁺ (98.3%)	¹⁷¹Re	(5/2−)
¹⁷¹Os	76	95	170.963185(20)	8.3(2) s	α (1.7%)	¹⁶⁷W	(5/2−)
¹⁷²Os	76	96	171.960023(16)	19.2(5) s	β⁺ (98.9%)	¹⁷²Re	0+
¹⁷²Os	76	96	171.960023(16)	19.2(5) s	α (1.1%)	¹⁶⁸W	0+
¹⁷³Os	76	97	172.959808(16)	22.4(9) s	β⁺ (99.6%)	¹⁷³Re	(5/2−)
¹⁷³Os	76	97	172.959808(16)	22.4(9) s	α (.4%)	¹⁶⁹W	(5/2−)
¹⁷⁴Os	76	98	173.957062(12)	44(4) s	β⁺ (99.97%)	¹⁷⁴Re	0+
¹⁷⁴Os	76	98	173.957062(12)	44(4) s	α (.024%)	¹⁷⁰W	0+
¹⁷⁵Os	76	99	174.956946(15)	1.4(1) min	β⁺	¹⁷⁵Re	(5/2−)
¹⁷⁶Os	76	100	175.95481(3)	3.6(5) min	β⁺	¹⁷⁶Re	0+
¹⁷⁷Os	76	101	176.954965(17)	3.0(2) min	β⁺	¹⁷⁷Re	1/2−
¹⁷⁸Os	76	102	177.953251(18)	5.0(4) min	β⁺	¹⁷⁸Re	0+
¹⁷⁹Os	76	103	178.953816(19)	6.5(3) min	β⁺	¹⁷⁹Re	(1/2−)
¹⁸⁰Os	76	104	179.952379(22)	21.5(4) min	β⁺	¹⁸⁰Re	0+
¹⁸¹Os	76	105	180.95324(3)	105(3) min	β⁺	¹⁸¹Re	1/2−
^181m1Os	48.9(2) keV			2.7(1) min	β⁺	¹⁸¹Re	(7/2)−
^181m2Os	156.5(7) keV			316(18) ns			(9/2)+
¹⁸²Os	76	106	181.952110(23)	22.10(25) h	ε	¹⁸²Re	0+
¹⁸³Os	76	107	182.95313(5)	13.0(5) h	β⁺	¹⁸³Re	9/2+
^183mOs	170.71(5) keV			9.9(3) h	β⁺ (85%)	¹⁸³Re	1/2−
^183mOs	170.71(5) keV			9.9(3) h	IT (15%)	¹⁸³Os	1/2−
¹⁸⁴Os	76	108	183.9524891(14)	觀測上穩定[n 4]			0+	2(1)×10⁻⁴
¹⁸⁵Os	76	109	184.9540423(14)	93.6(5) d	ε	¹⁸⁵Re	1/2−
^185m1Os	102.3(7) keV			3.0(4) µs			(7/2−)#
^185m2Os	275.7(8) keV			0.78(5) µs			(11/2+)
¹⁸⁶Os[n 5]	76	110	185.9538382(15)	2.0(11)×10¹⁵ y	α	¹⁸²W	0+	0.0159(3)
¹⁸⁷Os[n 6]	76	111	186.9557505(15)	觀測上穩定[n 7]			1/2−	0.0196(2)
¹⁸⁸Os[n 6]	76	112	187.9558382(15)	觀測上穩定[n 8]			0+	0.1324(8)
¹⁸⁹Os	76	113	188.9581475(16)	觀測上穩定[n 9]			3/2−	0.1615(5)
^189mOs	30.812(15) keV			5.81(6) h	IT	¹⁸⁹Os	9/2−
¹⁹⁰Os	76	114	189.9584470(16)	觀測上穩定[n 10]			0+	0.2626(2)
^190mOs	1705.4(2) keV			9.9(1) min	IT	¹⁹⁰Os	(10)−
¹⁹¹Os	76	115	190.9609297(16)	15.4(1) d	β⁻	¹⁹¹Ir	9/2−
^191mOs	74.382(3) keV			13.10(5) h	IT	¹⁹¹Os	3/2−
¹⁹²Os	76	116	191.9614807(27)	觀測上穩定[n 11]			0+	0.4078(19)
^192mOs	2015.40(11) keV			5.9(1) s	IT (87%)	¹⁹²Os	(10−)
^192mOs	2015.40(11) keV			5.9(1) s	β⁻ (13%)	¹⁹²Ir	(10−)
¹⁹³Os	76	117	192.9641516(27)	30.11(1) h	β⁻	¹⁹³Ir	3/2−
¹⁹⁴Os	76	118	193.9651821(28)	6.0(2) y	β⁻	¹⁹⁴Ir	0+
¹⁹⁵Os	76	119	194.96813(54)	6.5 min	β⁻	¹⁹⁵Ir	3/2−#
¹⁹⁶Os	76	120	195.96964(4)	34.9(2) min	β⁻	¹⁹⁶Ir	0+
¹⁹⁷Os	76	121		2.8(6) min

備註：畫上#號的數據代表沒有經過實驗的証明，只是理論推測而已，而用括號括起來的代表數據不確定性。

←	同位素列表	→
錸的同位素	鋨的同位素	銥的同位素

註釋

Bold for isotopes with half-lives longer than the age of the universe (nearly stable)
Abbreviations:
ε: Electron capture
IT: Isomeric transition
Bold for stable isotopes
Believed to undergo α decay to ¹⁸⁰W or β⁺β⁺ decay to ¹⁸⁴W with a half-life over 56×10¹² years
primordial radionuclide
Used in rhenium-osmium dating
Believed to undergo α decay to ¹⁸³W
Believed to undergo α decay to ¹⁸⁴W
Believed to undergo α decay to ¹⁸⁵W
Believed to undergo α decay to ¹⁸⁶W
Believed to undergo α decay to ¹⁸⁸W or β⁻β⁻ decay to ¹⁹²Pt with a half-life over 9.8×10¹² years

参考文獻

Meija, Juris; 等. . Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
. nucleonica. .

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.

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[2] Bold for isotopes with half-lives longer than the age of the universe (nearly stable)

[4] Abbreviations:
ε: Electron capture
IT: Isomeric transition

[5] Bold for stable isotopes

[6] Believed to undergo α decay to ¹⁸⁰W or β⁺β⁺ decay to ¹⁸⁴W with a half-life over 56×10¹² years

[7] rimordial radionuclide

[RD-8] Used in rhenium-osmium dating

[9] Believed to undergo α decay to ¹⁸³W

[10] Believed to undergo α decay to ¹⁸⁴W

[11] Believed to undergo α decay to ¹⁸⁵W

[12] Believed to undergo α decay to ¹⁸⁶W

[13] Believed to undergo α decay to ¹⁸⁸W or β⁻β⁻ decay to ¹⁹²Pt with a half-life over 9.8×10¹² years

[CIAAW2013-1] Meija, Juris; 等. . Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[3] . nucleonica. .