Isotopes of tin
List of isotopes
Abbreviations: EC: Electron capture IT: Isomeric transition Bold for stable isotopes Heaviest known nuclide with more protons than neutrons Believed to decay by β⁺β⁺ to ¹¹²Cd Fission product Believed to undergo β−β− decay to ¹²²Te Believed to undergo β−β− decay to ¹²⁴Te with a half-life over 100×10¹⁵ years Long-lived fission product

Isotopes of tin

Section Title: List of isotopes
Table Section Text: Abbreviations: EC: Electron capture IT: Isomeric transition Bold for stable isotopes Heaviest known nuclide with more protons than neutrons Believed to decay by β⁺β⁺ to ¹¹²Cd Fission product Believed to undergo β−β− decay to ¹²²Te Believed to undergo β−β− decay to ¹²⁴Te with a half-life over 100×10¹⁵ years Long-lived fission product

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	decay mode(s)	daughter isotope(s)	nuclear spin and parity	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)

excitation energy

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]	β+ (83%)	100In	0+

β+, p (17%)	99Cd

101Sn	50	51	100.93606(32)#	3(1) s	β+	101In	5/2+#

β+, p (rare)	100Cd

102Sn	50	52	101.93030(14)	4.5(7) s	β+	102In	0+

β+, p (rare)	101Cd

102mSn	2017(2) keV	720(220) ns	(6+)

103Sn	50	53	102.92810(32)#	7.0(6) s	β+	103In	5/2+#

β+, p (rare)	102Cd

104Sn	50	54	103.92314(11)	20.8(5) s	β+	104In	0+

105Sn	50	55	104.92135(9)	34(1) s	β+	105In	(5/2+)

β+, p (rare)	104Cd

106Sn	50	56	105.91688(5)	115(5) s	β+	106In	0+

107Sn	50	57	106.91564(9)	2.90(5) min	β+	107In	(5/2+)

108Sn	50	58	107.911925(21)	10.30(8) min	β+	108In	0+

109Sn	50	59	108.911283(11)	18.0(2) min	β+	109In	5/2(+)

110Sn	50	60	109.907843(15)	4.11(10) h	EC	110In	0+

111Sn	50	61	110.907734(7)	35.3(6) min	β+	111In	7/2+

111mSn	254.72(8) keV	12.5(10) µs	1/2+

112Sn	50	62	111.904818(5)	Observationally Stable	0+	0.0097(1)

113Sn	50	63	112.905171(4)	115.09(3) d	β+	113In	1/2+

113mSn	77.386(19) keV	21.4(4) min	IT (91.1%)	113Sn	7/2+

β+ (8.9%)	113In

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	IT	117Sn	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	IT	119Sn	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	β−	121Sb	3/2+

121m1Sn	6.30(6) keV	43.9(5) y	IT (77.6%)	121Sn	11/2−

β− (22.4%)	121Sb

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)	Observationally Stable	0+	0.0463(3)

123Sn	50	73	122.9057208(29)	129.2(4) d	β−	123Sb	11/2−

123m1Sn	24.6(4) keV	40.06(1) min	β−	123Sb	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)	Observationally Stable	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	β−	125Sb	11/2−

125mSn	27.50(14) keV	9.52(5) min	3/2+

126Sn	50	76	125.907653(11)	2.30(14)×105 y	β− (66.5%)	126m2Sb	0+

β− (33.5%)	126m1Sb

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	β−	127Sb	(11/2−)

127mSn	4.7(3) keV	4.13(3) min	β−	127Sb	(3/2+)

128Sn	50	78	127.910537(29)	59.07(14) min	β−	128Sb	0+

128mSn	2091.50(11) keV	6.5(5) s	IT	128Sn	(7−)

129Sn	50	79	128.91348(3)	2.23(4) min	β−	129Sb	(3/2+)#

129mSn	35.2(3) keV	6.9(1) min	β− (99.99%)	129Sb	(11/2−)#

IT (.002%)	129Sn

130Sn	50	80	129.913967(11)	3.72(7) min	β−	130Sb	0+

130m1Sn	1946.88(10) keV	1.7(1) min	β−	130Sb	(7−)#

130m2Sn	2434.79(12) keV	1.61(15) µs	(10+)

131Sn	50	81	130.917000(23)	56.0(5) s	β−	131Sb	(3/2+)

131m1Sn	80(30)# keV	58.4(5) s	β− (99.99%)	131Sb	(11/2−)

IT (.0004%)	131Sn

131m2Sn	4846.7(9) keV	300(20) ns	(19/2− to 23/2−)

132Sn	50	82	131.917816(15)	39.7(8) s	β−	132Sb	0+

133Sn	50	83	132.92383(4)	1.45(3) s	β− (99.97%)	133Sb	(7/2−)#

β−, n (.0294%)	132Sb

134Sn	50	84	133.92829(11)	1.050(11) s	β− (83%)	134Sb	0+

β−, n (17%)	133Sb

135Sn	50	85	134.93473(43)#	530(20) ms	β−	135Sb	(7/2−)

β−, n	134Sb

136Sn	50	86	135.93934(54)#	0.25(3) s	β−	136Sb	0+

β−, n	135Sb

137Sn	50	87	136.94599(64)#	190(60) ms	β−	137Sb	5/2−#

138Sn	50	88	137.951840(540)#	140 ms +30-20	β−	138Sb

138mSn	1344(2) keV	210(45) ns

139Sn	50	89	137.951840(540)#	130 ms	β−	139Sb

Sentence(s)

Tin-121m has a half-life of 43.9 years.

final_sentence: Tin-121m has a half-life of 43.9 years.