氬嘅同位素

氬有25個同位素，其中有3個係穩定嘅。

圖表

符號	Z（p）	N（n）	質量（原子質量單位）	半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
符號	激發能量			半衰期	原子核自旋	相對豐度	相對豐度嘅變化率
³⁰Ar	18	12	30.02156(32)#	<20 ns	0+
³¹Ar	18	13	31.01212(22)#	14.4(6) ms	5/2(+#)
³²Ar	18	14	31.9976380(19)	98(2) ms	0+
^32mAr	5600(100)# keV			?	5-#
³³Ar	18	15	32.9899257(5)	173.0(20) ms	1/2+
³⁴Ar	18	16	33.9802712(4)	844.5(34) ms	0+
³⁵Ar	18	17	34.9752576(8)	1.775(4) s	3/2+
³⁶Ar	18	18	35.967545106(29)	穩定	0+	0.003365(30)
³⁷Ar	18	19	36.96677632(22)	35.04(4) d	3/2+
³⁸Ar	18	20	37.9627324(4)	穩定	0+	0.000632(5)
³⁹Ar	18	21	38.964313(5)	269(3) a	7/2-
⁴⁰Ar	18	22	39.9623831225(29)	穩定	0+	0.996003(30)
⁴¹Ar	18	23	40.9645006(4)	109.61(4) min	7/2-
⁴²Ar	18	24	41.963046(6)	32.9(11) a	0+
⁴³Ar	18	25	42.965636(6)	5.37(6) min	(5/2-)
⁴⁴Ar	18	26	43.9649240(17)	11.87(5) min	0+
⁴⁵Ar	18	27	44.9680400(6)	21.48(15) s	(1/2,3/2,5/2)-
⁴⁶Ar	18	28	45.96809(4)	8.4(6) s	0+
⁴⁷Ar	18	29	46.97219(11)	1.23(3) s	3/2-#
⁴⁸Ar	18	30	47.97454(32)#	0.48(40) s	0+
⁴⁹Ar	18	31	48.98052(54)#	170(50) ms	3/2-#
⁵⁰Ar	18	32	49.98443(75)#	85(30) ms	0+
⁵¹Ar	18	33	50.99163(75)#	60# ms [>200 ns]	3/2-#
⁵²Ar	18	34	51.99678(97)#	10# ms	0+
⁵³Ar	18	35	53.00494(107)#	3# ms	(5/2-)#

備註：有#嘅數據代表冇經過實驗嘅證明，只係理論推測，而用咗括號括係代表數據唔確定。

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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