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Isotopes of tin

Tin (Sn) is the element with the greatest number of stable isotopes (ten), which is probably related to the fact that 50 is a "magic number" of protons. 28 additional unstable isotopes are known, including the "doubly magic" tin-100 (¹⁰⁰Sn) (discovered in 1994)^[1].
Standard atomic mass: 118.710(7) u

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Table

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
nuclide symbol	excitation energy			half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
⁹⁹Sn	50	49	98.94933(64)#	5# ms	9/2+#
¹⁰⁰Sn	50	50	99.93904(76)	1.1(4) s [0.94(+54-27) s]	0+
¹⁰¹Sn	50	51	100.93606(32)#	3(1) s	5/2+#
¹⁰²Sn	50	52	101.93030(14)	4.5(7) s	0+
^102mSn	2017(2) keV			720(220) ns	(6+)
¹⁰³Sn	50	53	102.92810(32)#	7.0(6) s	5/2+#
¹⁰⁴Sn	50	54	103.92314(11)	20.8(5) s	0+
¹⁰⁵Sn	50	55	104.92135(9)	34(1) s	(5/2+)
¹⁰⁶Sn	50	56	105.91688(5)	115(5) s	0+
¹⁰⁷Sn	50	57	106.91564(9)	2.90(5) min	(5/2+)
¹⁰⁸Sn	50	58	107.911925(21)	10.30(8) min	0+
¹⁰⁹Sn	50	59	108.911283(11)	18.0(2) min	5/2(+)
¹¹⁰Sn	50	60	109.907843(15)	4.11(10) h	0+
¹¹¹Sn	50	61	110.907734(7)	35.3(6) min	7/2+
^111mSn	254.72(8) keV			12.5(10) µs	1/2+
¹¹²Sn	50	62	111.904818(5)	STABLE	0+	0.0097(1)
¹¹³Sn	50	63	112.905171(4)	115.09(3) d	1/2+
^113mSn	77.386(19) keV			21.4(4) min	7/2+
¹¹⁴Sn	50	64	113.902779(3)	STABLE	0+	0.0066(1)
^114mSn	3087.37(7) keV			733(14) ns	7-
¹¹⁵Sn	50	65	114.903342(3)	STABLE	1/2+	0.0034(1)
^115m1Sn	612.81(4) keV			3.26(8) µs	7/2+
^115m2Sn	713.64(12) keV			159(1) µs	11/2-
¹¹⁶Sn	50	66	115.901741(3)	STABLE	0+	0.1454(9)
¹¹⁷Sn	50	67	116.902952(3)	STABLE	1/2+	0.0768(7)
^117m1Sn	314.58(4) keV			13.76(4) d	11/2-
^117m2Sn	2406.4(4) keV			1.75(7) µs	(19/2+)
¹¹⁸Sn	50	68	117.901603(3)	STABLE	0+	0.2422(9)
¹¹⁹Sn	50	69	118.903308(3)	STABLE	1/2+	0.0859(4)
^119m1Sn	89.531(13) keV			293.1(7) d	11/2-
^119m2Sn	2127.0(10) keV			9.6(12) µs	(19/2+)
¹²⁰Sn	50	70	119.9021947(27)	STABLE	0+	0.3258(9)
^120m1Sn	2481.63(6) keV			11.8(5) µs	(7-)
^120m2Sn	2902.22(22) keV			6.26(11) µs	(10+)#
¹²¹Sn	50	71	120.9042355(27)	27.03(4) h	3/2+
^121m1Sn	6.30(6) keV			43.9(5) a	11/2-
^121m2Sn	1998.8(9) keV			5.3(5) µs	(19/2+)#
^121m3Sn	2834.6(18) keV			0.167(25) µs	(27/2-)
¹²²Sn	50	72	121.9034390(29)	STABLE	0+	0.0463(3)
¹²³Sn	50	73	122.9057208(29)	129.2(4) d	11/2-
^123m1Sn	24.6(4) keV			40.06(1) min	3/2+
^123m2Sn	1945.0(10) keV			7.4(26) µs	(19/2+)
^123m3Sn	2153.0(12) keV			6 µs	(23/2+)
^123m4Sn	2713.0(14) keV			34 µs	(27/2-)
¹²⁴Sn	50	74	123.9052739(15)	STABLE [>100E+15 a]	0+	0.0579(5)
^124m1Sn	2204.622(23) keV			0.27(6) µs	5-
^124m2Sn	2325.01(4) keV			3.1(5) µs	7-
^124m3Sn	2656.6(5) keV			45(5) µs	(10+)#
¹²⁵Sn	50	75	124.9077841(16)	9.64(3) d	11/2-
^125mSn	27.50(14) keV			9.52(5) min	3/2+
¹²⁶Sn	50	76	125.907653(11)	2.30(14)E+5 a	0+
^126m1Sn	2218.99(8) keV			6.6(14) µs	7-
^126m2Sn	2564.5(5) keV			7.7(5) µs	(10+)#
¹²⁷Sn	50	77	126.910360(26)	2.10(4) h	(11/2-)
^127mSn	4.7(3) keV			4.13(3) min	(3/2+)
¹²⁸Sn	50	78	127.910537(29)	59.07(14) min	0+
^128mSn	2091.50(11) keV			6.5(5) s	(7-)
¹²⁹Sn	50	79	128.91348(3)	2.23(4) min	(3/2+)#
^129mSn	35.2(3) keV			6.9(1) min	(11/2-)#
¹³⁰Sn	50	80	129.913967(11)	3.72(7) min	0+
^130m1Sn	1946.88(10) keV			1.7(1) min	(7-)#
^130m2Sn	2434.79(12) keV			1.61(15) µs	(10+)
¹³¹Sn	50	81	130.917000(23)	56.0(5) s	(3/2+)
^131m1Sn	80(30)# keV			58.4(5) s	(11/2-)
^131m2Sn	4846.7(9) keV			300(20) ns	(19/2- to 23/2-)
¹³²Sn	50	82	131.917816(15)	39.7(8) s	0+
¹³³Sn	50	83	132.92383(4)	1.45(3) s	(7/2-)#
¹³⁴Sn	50	84	133.92829(11)	1.050(11) s	0+
¹³⁵Sn	50	85	134.93473(43)#	530(20) ms	(7/2-)
¹³⁶Sn	50	86	135.93934(54)#	0.25(3) s	0+
¹³⁷Sn	50	87	136.94599(64)#	190(60) ms	5/2-#

Notes

Geologically exceptional samples are known in which the isotopic composition lies outside the reported range. The uncertainty in the atomic mass may exceed the stated value for such specimens.
Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

References

^ Phil Walker (1994). "Doubly Magic Discovery of Tin-100". PHYSICS WORLD 7 (June).

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.

Isotopes of indium	Isotopes of tin	Isotopes of antimony
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Categories: Tin | Isotopes

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_tin". A list of authors is available in Wikipedia.