氧的同位素

Late in a massive star's life, ¹⁶O concentrates in the O-shell, ¹⁷O in the H-shell and ¹⁸O in the He-shell

氧 (原子質量單位:15.9994 )共有17個同位素，其中有3個是穩定的。

圖表 [编辑]

符號	Z(p)	N(n)	質量(u)	半衰期	原子核自旋	相對豐度	相對豐度的變化量
¹²O	8	4	12.034405(20)	580(30)E-24 s [0.40(25) MeV]	0+
¹³O	8	5	13.024812(10)	8.58(5) ms	(3/2-)
¹⁴O	8	6	14.00859625(12)	70.598(18) s	0+
¹⁵O	8	7	15.0030656(5)	122.24(16) s	1/2-
¹⁶O	8	8	15.99491461956(16)	穩定	0+	0.99757(16)	0.99738-0.99776
¹⁷O	8	9	16.99913170(12)	穩定	5/2+	0.00038(1)	0.00037-0.00040
¹⁸O	8	10	17.9991610(7)	穩定	0+	0.00205(14)	0.00188-0.00222
¹⁹O	8	11	19.003580(3)	26.464(9) s	5/2+
²⁰O	8	12	20.0040767(12)	13.51(5) s	0+
²¹O	8	13	21.008656(13)	3.42(10) s	(1/2,3/2,5/2)+
²²O	8	14	22.00997(6)	2.25(15) s	0+
²³O	8	15	23.01569(13)	82(37) ms	1/2+#
²⁴O	8	16	24.02047(25)	65(5) ms	0+
²⁵O	8	17	25.02946(28)#	<50 ns	(3/2+)#
²⁶O	8	18	26.03834(28)#	<40 ns	0+
²⁷O	8	19	27.04826(54)#	<260 ns	3/2+#
²⁸O	8	20	28.05781(64)#	<100 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	→
氮的同位素	氧的同位素	氟的同位素

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.