矽嘅同位素

矽有23個同位素，其中3個係穩定嘅。

圖表

符號	Z（p）	N（n）	質量（u）	半衰期	原子核自旋	相對豐度	相對豐度嘅變化量
²²Si	14	8	22.03453(22)#	29(2) ms	0+
²³Si	14	9	23.02552(21)#	42.3(4) ms	3/2+#
²⁴Si	14	10	24.011546(21)	140(8) ms	0+
²⁵Si	14	11	25.004106(11)	220(3) ms	5/2+
²⁶Si	14	12	25.992330(3)	2.234(13) s	0+
²⁷Si	14	13	26.98670491(16)	4.16(2) s	5/2+
²⁸Si	14	14	27.9769265325(19)	穩定	0+	0.92223(19)	0.92205-0.92241
²⁹Si	14	15	28.976494700(22)	穩定	1/2+	0.04685(8)	0.04678-0.04692
³⁰Si	14	16	29.97377017(3)	穩定	0+	0.03092(11)	0.03082-0.03102
³¹Si	14	17	30.97536323(4)	157.3(3) min	3/2+
³²Si	14	18	31.97414808(5)	170(13) a	0+
³³Si	14	19	32.978000(17)	6.18(18) s	(3/2+)
³⁴Si	14	20	33.978576(15)	2.77(20) s	0+
³⁵Si	14	21	34.98458(4)	780(120) ms	7/2-#
³⁶Si	14	22	35.98660(13)	0.45(6) s	0+
³⁷Si	14	23	36.99294(18)	90(60) ms	(7/2-)#
³⁸Si	14	24	37.99563(15)	90# ms [>1 µs]	0+
³⁹Si	14	25	39.00207(36)	47.5(20) ms	7/2-#
⁴⁰Si	14	26	40.00587(60)	33.0(10) ms	0+
⁴¹Si	14	27	41.01456(198)	20.0(25) ms	7/2-#
⁴²Si	14	28	42.01979(54)#	13(4) ms	0+
⁴³Si	14	29	43.02866(75)#	15# ms [>260 ns]	3/2-#
⁴⁴Si	14	30	44.03526(86)#	10# ms	0+

備註：畫上#號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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