鉑的同位素

**主要的鉑同位素**
標準原子質量（英语：Standard atomic weight） (Ar, 標準)	195.084(9);
←Ir（77）	Au（79）→
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鉑（原子量：195.084(9)）的同位素，當中有3個是穩定的，以及3個天然放射性同位素190
Pt
、192
Pt
、198
Pt
，不過只有190
Pt
的半衰期為已知，另外兩個則只有下界。

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^[3]^{[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^[3]^{[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）
¹⁶⁵Pt^[4]	78	87		6996259999999999999♠260+260 −90 µs	α	¹⁶¹Os
¹⁶⁶Pt	78	88	165.99486(54)#	6996259999999999999♠260+300 −60 µs^[4]	α	¹⁶²Os	0+
¹⁶⁷Pt	78	89	166.99298(44)#	1.1(2) ms^[4]	α	¹⁶³Os	7/2−#
¹⁶⁸Pt	78	90	167.98815(22)	2.00(18) ms	α	¹⁶⁴Os	0+
¹⁶⁸Pt	78	90	167.98815(22)	2.00(18) ms	β⁺ （不常見）	¹⁶⁸Ir	0+
¹⁶⁹Pt	78	91	168.98672(22)#	3.7(15) ms	α	¹⁶⁵Os	3/2−#
¹⁶⁹Pt	78	91	168.98672(22)#	3.7(15) ms	β⁺ （不常見）	¹⁶⁹Ir	3/2−#
¹⁷⁰Pt	78	92	169.982495(20)	14.0(2) ms	α (98%)	¹⁶⁶Os	0+
¹⁷⁰Pt	78	92	169.982495(20)	14.0(2) ms	β⁺ (2%)	¹⁷⁰Ir	0+
¹⁷¹Pt	78	93	170.98124(9)	51(2) ms	α (99%)	¹⁶⁷Os	3/2−#
¹⁷¹Pt	78	93	170.98124(9)	51(2) ms	β⁺ (1%)	¹⁷¹Ir	3/2−#
¹⁷²Pt	78	94	171.977347(14)	98.4(24) ms	α (77%)	¹⁶⁸Os	0+
¹⁷²Pt	78	94	171.977347(14)	98.4(24) ms	β⁺ (23%)	¹⁷²Ir	0+
¹⁷³Pt	78	95	172.97644(6)	365(7) ms	α (84%)	¹⁶⁹Os	5/2−#
¹⁷³Pt	78	95	172.97644(6)	365(7) ms	β⁺ (16%)	¹⁷³Ir	5/2−#
¹⁷⁴Pt	78	96	173.972819(13)	0.889(17) s	α (83%)	¹⁷⁰Os	0+
¹⁷⁴Pt	78	96	173.972819(13)	0.889(17) s	β⁺ (17%)	¹⁷⁴Ir	0+
¹⁷⁵Pt	78	97	174.972421(20)	2.53(6) s	α (64%)	¹⁷¹Os	5/2−#
¹⁷⁵Pt	78	97	174.972421(20)	2.53(6) s	β⁺ (36%)	¹⁷⁵Ir	5/2−#
¹⁷⁶Pt	78	98	175.968945(15)	6.33(15) s	β⁺ (62%)	¹⁷⁶Ir	0+
¹⁷⁶Pt	78	98	175.968945(15)	6.33(15) s	α (38%)	¹⁷²Os	0+
¹⁷⁷Pt	78	99	176.968469(16)	10.6(4) s	β⁺ (94.4%)	¹⁷⁷Ir	5/2−
¹⁷⁷Pt	78	99	176.968469(16)	10.6(4) s	α (5.6%)	¹⁷³Os	5/2−
^177mPt	147.4(4) keV			2.2(3) µs			1/2−
¹⁷⁸Pt	78	100	177.965649(12)	21.1(6) s	β⁺ (92.3%)	¹⁷⁸Ir	0+
¹⁷⁸Pt	78	100	177.965649(12)	21.1(6) s	α (7.7%)	¹⁷⁴Os	0+
¹⁷⁹Pt	78	101	178.965363(10)	21.2(4) s	β⁺ (99.76%)	¹⁷⁹Ir	1/2−
¹⁷⁹Pt	78	101	178.965363(10)	21.2(4) s	α (0.24%)	¹⁷⁵Os	1/2−
¹⁸⁰Pt	78	102	179.963031(12)	56(2) s	β⁺ (99.7%)	¹⁸⁰Ir	0+
¹⁸⁰Pt	78	102	179.963031(12)	56(2) s	α (0.3%)	¹⁷⁶Os	0+
¹⁸¹Pt	78	103	180.963097(16)	52.0(22) s	β⁺ (99.93%)	¹⁸¹Ir	1/2−
¹⁸¹Pt	78	103	180.963097(16)	52.0(22) s	α (0.074%)	¹⁷⁷Os	1/2−
¹⁸²Pt	78	104	181.961171(17)	2.2(1) min	β⁺ (99.96%)	¹⁸²Ir	0+
¹⁸²Pt	78	104	181.961171(17)	2.2(1) min	α (.038%)	¹⁷⁸Os	0+
¹⁸³Pt	78	105	182.961597(17)	6.5(10) min	β⁺ (99.99%)	¹⁸³Ir	1/2−
¹⁸³Pt	78	105	182.961597(17)	6.5(10) min	α (.0096%)	¹⁷⁹Os	1/2−
^183m1Pt	34.50(8) keV			43(5) s	β⁺ (99.99%)	¹⁸³Ir	(7/2)−
					α (4×10⁻⁴%)	¹⁷⁹Os
					IT	¹⁸³Pt
^183m2Pt	195.68(11) keV			>150 ns			(9/2)+
¹⁸⁴Pt	78	106	183.959922(19)	17.3(2) min	β⁺ (99.99%)	¹⁸⁴Ir	0+
¹⁸⁴Pt	78	106	183.959922(19)	17.3(2) min	α (.00169%)	¹⁸⁰Os	0+
^184mPt	1839.4(16) keV			1.01(5) ms	IT	¹⁸⁴Pt	8−
¹⁸⁵Pt	78	107	184.96062(4)	70.9(24) min	β⁺ (99.99%)	¹⁸⁵Ir	(9/2+)
¹⁸⁵Pt	78	107	184.96062(4)	70.9(24) min	α (.005%)	¹⁸¹Os	(9/2+)
^185mPt	103.4(2) keV			33.0(8) min	β⁺ (98%)	¹⁸⁵Ir	(1/2−)
^185mPt	103.4(2) keV			33.0(8) min	α (2%)	¹⁸¹Os	(1/2−)
¹⁸⁶Pt	78	108	185.959351(23)	2.08(5) h	β⁺ (99.99%)	¹⁸⁶Ir	0+
¹⁸⁶Pt	78	108	185.959351(23)	2.08(5) h	α (1.4×10⁻⁴%)	¹⁸²Os	0+
¹⁸⁷Pt	78	109	186.96059(3)	2.35(3) h	β⁺	¹⁸⁷Ir	3/2−
¹⁸⁸Pt	78	110	187.959395(6)	10.2(3) d	ε (99.99%)	¹⁸⁸Ir	0+
¹⁸⁸Pt	78	110	187.959395(6)	10.2(3) d	α (2.6×10⁻⁵%)	¹⁸⁴Os	0+
¹⁸⁹Pt	78	111	188.960834(12)	10.87(12) h	β⁺	¹⁸⁹Ir	3/2−
^189m1Pt	172.80(6) keV			464(25) ns			9/2−
^189m2Pt	191.6(4) keV			143(5) µs			(13/2+)
¹⁹⁰Pt	78	112	189.959932(6)	4.97(16)×10¹¹ y	α	¹⁸⁶Os	0+	1.4(1)×10⁻⁴
¹⁹¹Pt	78	113	190.961677(5)	2.862(7) d	ε	¹⁹¹Ir	3/2−
^191m1Pt	100.67(2) keV			>1 µs			(9/2)−
^191m2Pt	149.04(2) keV			95(5) µs			(13/2)+
¹⁹²Pt	78	114	191.9610380(27)	觀測上穩定^{[n 4]}			0+	0.00782(7)
¹⁹³Pt	78	115	192.9629874(18)	50(6) y	ε	¹⁹³Ir	1/2−
^193mPt	149.78(4) keV			4.33(3) d	IT	¹⁹³Pt	13/2+
¹⁹⁴Pt	78	116	193.9626803(9)	觀測上穩定^{[n 5]}			0+	0.32967(99)
¹⁹⁵Pt	78	117	194.9647911(9)	觀測上穩定^{[n 6]}			1/2−	0.33832(10)
^195mPt	259.30(8) keV			4.010(5) d	IT	¹⁹⁵Pt	13/2+
¹⁹⁶Pt	78	118	195.9649515(9)	觀測上穩定^{[n 7]}			0+	0.25242(41)
¹⁹⁷Pt	78	119	196.9673402(9)	19.8915(19) h	β⁻	¹⁹⁷Au	1/2−
^197mPt	399.59(20) keV			95.41(18) min	IT (96.7%)	¹⁹⁷Pt	13/2+
^197mPt	399.59(20) keV			95.41(18) min	β⁻ (3.3%)	¹⁹⁷Au	13/2+
¹⁹⁸Pt	78	120	197.967893(3)	觀測上穩定^{[n 8]}			0+	0.07163(55)
¹⁹⁹Pt	78	121	198.970593(3)	30.80(21) min	β⁻	¹⁹⁹Au	5/2−
^199mPt	424(2) keV			13.6(4) s	IT	¹⁹⁹Pt	(13/2)+
²⁰⁰Pt	78	122	199.971441(22)	12.5(3) h	β⁻	²⁰⁰Au	0+
²⁰¹Pt	78	123	200.97451(5)	2.5(1) min	β⁻	²⁰¹Au	(5/2−)
²⁰²Pt	78	124	201.97574(32)#	44(15) h	β⁻	²⁰²Au	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	→
銥的同位素	鉑的同位素	金的同位素

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
^ Believed to undergo α decay to ¹⁸⁸Os with a half-life over 470×10¹⁵ years
^ Believed to undergo α decay to ¹⁹⁰Os
^ Believed to undergo α decay to ¹⁹¹Os
^ Believed to undergo α decay to ¹⁹²Os
^ Believed to undergo α decay to ¹⁹⁴Os or double β⁻ decay to ¹⁹⁸Hg with a half-life over 320×10¹² years

参考文獻编辑

^ Braun, Mihály; Georgiev, Yordan M.; Schönherr, Tommy; Wilsenach, Heinrich; Zuber, Kai. A new precision measurement of the α -decay half-life of 190 Pt. Physics Letters B (Elsevier BV). 2017, 768: 317–320. ISSN 0370-2693. doi:10.1016/j.physletb.2017.02.052.
^ 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）.
^ ^4.0 ^4.1 ^4.2 Hilton, J.; et al. α-spectroscopy studies of the new nuclides ¹⁶⁵Pt and ¹⁷⁰Hg (PDF). Physical Review C. 2019, 100 (1): 014305 [2023-06-18]. S2CID 199118719. doi:10.1103/PhysRevC.100.014305. （原始内容存档 (PDF)于2022-09-10）.

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.

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

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

[6] Bold for stable isotopes

[8] Believed to undergo α decay to ¹⁸⁸Os with a half-life over 470×10¹⁵ years

[9] Believed to undergo α decay to ¹⁹⁰Os

[10] Believed to undergo α decay to ¹⁹¹Os

[11] Believed to undergo α decay to ¹⁹²Os

[12] Believed to undergo α decay to ¹⁹⁴Os or double β⁻ decay to ¹⁹⁸Hg with a half-life over 320×10¹² years

[:0-1] Braun, Mihály; Georgiev, Yordan M.; Schönherr, Tommy; Wilsenach, Heinrich; Zuber, Kai. A new precision measurement of the α -decay half-life of 190 Pt. Physics Letters B (Elsevier BV). 2017, 768: 317–320. ISSN 0370-2693. doi:10.1016/j.physletb.2017.02.052.

[CIAAW2013-2] 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.

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

[Pt165Hg170-7] 4.0 ^4.1 ^4.2 Hilton, J.; et al. α-spectroscopy studies of the new nuclides ¹⁶⁵Pt and ¹⁷⁰Hg (PDF). Physical Review C. 2019, 100 (1): 014305 [2023-06-18]. S2CID 199118719. doi:10.1103/PhysRevC.100.014305. （原始内容存档 (PDF)于2022-09-10）.

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