鎢的同位素

**主要的鎢同位素**
標準原子質量（英语：Standard atomic weight） (Ar, 標準)	183.84(1);
←Ta（73）	Re（75）→
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鎢（原子量：183.84(1)）共有46個同位素，其中有5種在自然界出現，當中180
W
具有极长的半衰期，其他4种理论上具有放射性但是迄今为止尚未观测到。

圖表[编辑]

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）
¹⁵⁸W	74	84	157.97456(54)#	1.37(17) ms	α	¹⁵⁴Hf	0+
^158mW	1889(8) keV			143(19) µs			8+
¹⁵⁹W	74	85	158.97292(43)#	8.2(7) ms	α (82%)	¹⁵⁵Hf	7/2−#
¹⁵⁹W	74	85	158.97292(43)#	8.2(7) ms	β⁺ (18%)	¹⁵⁹Ta	7/2−#
¹⁶⁰W	74	86	159.96848(22)	90(5) ms	α (87%)	¹⁵⁶Hf	0+
¹⁶⁰W	74	86	159.96848(22)	90(5) ms	β⁺ (14%)	¹⁶⁰Ta	0+
¹⁶¹W	74	87	160.96736(21)#	409(16) ms	α (73%)	¹⁵⁷Hf	7/2−#
¹⁶¹W	74	87	160.96736(21)#	409(16) ms	β⁺ (23%)	¹⁶¹Ta	7/2−#
¹⁶²W	74	88	161.963497(19)	1.36(7) s	β⁺ (53%)	¹⁶²Ta	0+
¹⁶²W	74	88	161.963497(19)	1.36(7) s	α (47%)	¹⁵⁸Hf	0+
¹⁶³W	74	89	162.96252(6)	2.8(2) s	β⁺ (59%)	¹⁶³Ta	3/2−#
¹⁶³W	74	89	162.96252(6)	2.8(2) s	α (41%)	¹⁵⁹Hf	3/2−#
¹⁶⁴W	74	90	163.958954(13)	6.3(2) s	β⁺ (97.4%)	¹⁶⁴Ta	0+
¹⁶⁴W	74	90	163.958954(13)	6.3(2) s	α (2.6%)	¹⁶⁰Hf	0+
¹⁶⁵W	74	91	164.958280(27)	5.1(5) s	β⁺ (99.8%)	¹⁶⁵Ta	3/2−#
¹⁶⁵W	74	91	164.958280(27)	5.1(5) s	α (.2%)	¹⁶¹Hf	3/2−#
¹⁶⁶W	74	92	165.955027(11)	19.2(6) s	β⁺ (99.96%)	¹⁶⁶Ta	0+
¹⁶⁶W	74	92	165.955027(11)	19.2(6) s	α (.035%)	¹⁶²Hf	0+
¹⁶⁷W	74	93	166.954816(21)	19.9(5) s	β⁺ (>99.9%)	¹⁶⁷Ta	3/2−#
¹⁶⁷W	74	93	166.954816(21)	19.9(5) s	α (<.1%)	¹⁶³Hf	3/2−#
¹⁶⁸W	74	94	167.951808(17)	51(2) s	β⁺ (99.99%)	¹⁶⁸Ta	0+
¹⁶⁸W	74	94	167.951808(17)	51(2) s	α (.0319%)	¹⁶⁴Hf	0+
¹⁶⁹W	74	95	168.951779(17)	76(6) s	β⁺	¹⁶⁹Ta	(5/2−)
¹⁷⁰W	74	96	169.949228(16)	2.42(4) min	β⁺(99%)	¹⁷⁰Ta	0+
¹⁷⁰W	74	96	169.949228(16)	2.42(4) min	α (1%)	¹⁶⁶Hf	0+
¹⁷¹W	74	97	170.94945(3)	2.38(4) min	β⁺	¹⁷¹Ta	(5/2−)
¹⁷²W	74	98	171.94729(3)	6.6(9) min	β⁺	¹⁷²Ta	0+
¹⁷³W	74	99	172.94769(3)	7.6(2) min	β⁺	¹⁷³Ta	5/2−
¹⁷⁴W	74	100	173.94608(3)	33.2(21) min	β⁺	¹⁷⁴Ta	0+
¹⁷⁵W	74	101	174.94672(3)	35.2(6) min	β⁺	¹⁷⁵Ta	(1/2−)
¹⁷⁶W	74	102	175.94563(3)	2.5(1) h	ε	¹⁷⁶Ta	0+
¹⁷⁷W	74	103	176.94664(3)	132(2) min	β⁺	¹⁷⁷Ta	1/2−
¹⁷⁸W	74	104	177.945876(16)	21.6(3) d	ε	¹⁷⁸Ta	0+
¹⁷⁹W	74	105	178.947070(17)	37.05(16) min	β⁺	¹⁷⁹Ta	(7/2)−
^179m1W	221.926(8) keV			6.40(7) min	IT (99.72%)	¹⁷⁹W	(1/2)−
^179m1W	221.926(8) keV			6.40(7) min	β⁺ (.28%)	¹⁷⁹Ta	(1/2)−
^179m2W	1631.90(8) keV			390(30) ns			(21/2+)
^179m3W	3348.45(16) keV			750(80) ns			(35/2−)
¹⁸⁰W^{[n 4]}	74	106	179.946704(4)	1.8(0.2)×10¹⁸ y	α	¹⁷⁶Hf	0+	0.0012(1)
^180m1W	1529.04(3) keV			5.47(9) ms	IT	¹⁸⁰W	8−
^180m2W	3264.56(21) keV			2.33(19) µs			14−
¹⁸¹W	74	107	180.948197(5)	121.2(2) d	ε	¹⁸¹Ta	9/2+
¹⁸²W	74	108	181.9482042(9)	觀測上穩定 ^{[n 5]}			0+	0.2650(16)
¹⁸³W	74	109	182.9502230(9)	觀測上穩定 ^{[n 6]}			1/2−	0.1431(4)
^183mW	309.493(3) keV			5.2(3) s	IT	¹⁸³W	11/2+
¹⁸⁴W	74	110	183.9509312(9)	觀測上穩定 ^{[n 7]}			0+	0.3064(2)
¹⁸⁵W	74	111	184.9534193(10)	75.1(3) d	β⁻	¹⁸⁵Re	3/2−
^185mW	197.43(5) keV			1.597(4) min	IT	¹⁸⁵W	11/2+
¹⁸⁶W	74	112	185.9543641(19)	觀測上穩定 ^{[n 8]}			0+	0.2843(19)
^186m1W	1517.2(6) keV			18(1) µs			(7−)
^186m2W	3542.8(21) keV			>3 ms			(16+)
¹⁸⁷W	74	113	186.9571605(19)	23.72(6) h	β⁻	¹⁸⁷Re	3/2−
¹⁸⁸W	74	114	187.958489(4)	69.78(5) d	β⁻	¹⁸⁸Re	0+
¹⁸⁹W	74	115	188.96191(21)	11.6(3) min	β⁻	¹⁸⁹Re	(3/2−)
¹⁹⁰W	74	116	189.96318(18)	30.0(15) min	β⁻	¹⁹⁰Re	0+
^190mW	2381(5) keV			<3.1 ms			(10−)
¹⁹¹W	74	117	190.96660(21)#	20# s [>300 ns]			3/2−#
¹⁹²W	74	118	191.96817(64)#	10# s [>300 ns]			0+

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	→
鉭的同位素	鎢的同位素	錸的同位素

註釋[编辑]

^ 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
^ Primordial radionuclide
^ Believed to undergo α decay to ¹⁷⁸Hf with a half-life over 1.70×10²⁰ y
^ Believed to undergo α decay to ¹⁷⁹Hf with a half-life over 8.0×10¹⁹ y
^ Believed to undergo α decay to ¹⁸⁰Hf with a half-life over 1.80×10²⁰ y
^ Believed to undergo α decay to ¹⁸²Hf with a half-life over 4.1×10¹⁸ y

参考文獻[编辑]

^ Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.
^ Universal Nuclide Chart. nucleonica. [2015-10-06]. （原始内容存档于2017-02-19）.

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) （页面存档备份，存于互联网档案馆）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) （页面存档备份，存于互联网档案馆）.
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 （页面存档备份，存于互联网档案馆）, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （页面存档备份，存于互联网档案馆） (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.

[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] Primordial radionuclide

[7] Believed to undergo α decay to ¹⁷⁸Hf with a half-life over 1.70×10²⁰ y

[8] Believed to undergo α decay to ¹⁷⁹Hf with a half-life over 8.0×10¹⁹ y

[9] Believed to undergo α decay to ¹⁸⁰Hf with a half-life over 1.80×10²⁰ y

[10] Believed to undergo α decay to ¹⁸²Hf with a half-life over 4.1×10¹⁸ y

[CIAAW2013-1] Meija, Juris; et al. Atomic weights of the elements 2013 (IUPAC Technical Report). Pure and Applied Chemistry. 2016, 88 (3): 265–91. doi:10.1515/pac-2015-0305.

[3] Universal Nuclide Chart. nucleonica. [2015-10-06]. （原始内容存档于2017-02-19）.

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