Isotopes of Xenon - Table

Table

nuclide
symbol		 Z(p) N(n)
isotopic mass (u)
 half-life decay
mode(s)		 daughter
isotope(s)		 nuclear
spin		 representative
isotopic
composition
(mole fraction)		 range of natural
variation
(mole fraction)
excitation energy
110Xe 54 56 109.94428(14) 310(190) ms
 β+ 110I 0+
α 106Te
111Xe 54 57 110.94160(33)# 740(200) ms β+ (90%) 111I 5/2+#
α (10%) 107Te
112Xe 54 58 111.93562(11) 2.7(8) s β+ (99.1%) 112I 0+
α (.9%) 108Te
113Xe 54 59 112.93334(9) 2.74(8) s β+ (92.98%) 113I (5/2+)#
β+, p (7%) 112Te
α (.011%) 109Te
β+, α (.007%) 109Sb
114Xe 54 60 113.927980(12) 10.0(4) s β+ 114I 0+
115Xe 54 61 114.926294(13) 18(4) s β+ (99.65%) 115I (5/2+)
β+, p (.34%) 114Te
β+, α (3×10−4%) 111Sb
116Xe 54 62 115.921581(14) 59(2) s β+ 116I 0+
117Xe 54 63 116.920359(11) 61(2) s β+ (99.99%) 117I 5/2(+)
β+, p (.0029%) 116Te
118Xe 54 64 117.916179(11) 3.8(9) min β+ 118I 0+
119Xe 54 65 118.915411(11) 5.8(3) min β+ 119I 5/2(+)
120Xe 54 66 119.911784(13) 40(1) min β+ 120I 0+
121Xe 54 67 120.911462(12) 40.1(20) min β+ 121I (5/2+)
122Xe 54 68 121.908368(12) 20.1(1) h β+ 122I 0+
123Xe 54 69 122.908482(10) 2.08(2) h EC 123I 1/2+
123mXe 185.18(22) keV 5.49(26) µs 7/2(-)
124Xe 54 70 123.905893(2) Observationally Stable 0+ 9.52(3)×10−4
125Xe 54 71 124.9063955(20) 16.9(2) h β+ 125I 1/2(+)
125m1Xe 252.60(14) keV 56.9(9) s IT 125Xe 9/2(-)
125m2Xe 295.86(15) keV 0.14(3) µs 7/2(+)
126Xe 54 72 125.904274(7) Observationally Stable 0+ 8.90(2)×10−4
127Xe 54 73 126.905184(4) 36.345(3) d EC 127I 1/2+
127mXe 297.10(8) keV 69.2(9) s IT 127Xe 9/2-
128Xe 54 74 127.9035313(15) Stable 0+ 0.019102(8)
129Xe 54 75 128.9047794(8) Stable 1/2+ 0.264006(82)
129mXe 236.14(3) keV 8.88(2) d IT 129Xe 11/2-
130Xe 54 76 129.9035080(8) Stable 0+ 0.040710(13)
131Xe 54 77 130.9050824(10) Stable 3/2+ 0.212324(30)
131mXe 163.930(8) keV 11.934(21) d IT 131Xe 11/2-
132Xe 54 78 131.9041535(10) Stable 0+ 0.269086(33)
132mXe 2752.27(17) keV 8.39(11) ms IT 132Xe (10+)
133Xe 54 79 132.9059107(26) 5.2475(5) d β- 133Cs 3/2+
133mXe 233.221(18) keV 2.19(1) d IT 133Xe 11/2-
134Xe 54 80 133.9053945(9) Observationally Stable 0+ 0.104357(21)
134m1Xe 1965.5(5) keV 290(17) ms IT 134Xe 7-
134m2Xe 3025.2(15) keV 5(1) µs (10+)
135Xe 54 81 134.907227(5) 9.14(2) h β- 135Cs 3/2+
135mXe 526.551(13) keV 15.29(5) min IT (99.99%) 135Xe 11/2-
β- (.004%) 135Cs
136Xe 54 82 135.907219(8) 2.11(0.04,0.21) x 1021yr β-β- 136Ba 0+ 0.088573(44)
136mXe 1891.703(14) keV 2.95(9) µs 6+
137Xe 54 83 136.911562(8) 3.818(13) min β- 137Cs 7/2-
138Xe 54 84 137.91395(5) 14.08(8) min β- 138Cs 0+
139Xe 54 85 138.918793(22) 39.68(14) s β- 139Cs 3/2-
140Xe 54 86 139.92164(7) 13.60(10) s β- 140Cs 0+
141Xe 54 87 140.92665(10) 1.73(1) s β- (99.45%) 141Cs 5/2(-#)
β-, n (.043%) 140Cs
142Xe 54 88 141.92971(11) 1.22(2) s β- (99.59%) 142Cs 0+
β-, n (.41%) 141Cs
143Xe 54 89 142.93511(21)# 0.511(6) s β- 143Cs 5/2-
144Xe 54 90 143.93851(32)# 0.388(7) s β- 144Cs 0+
β-, n 143Cs
145Xe 54 91 144.94407(32)# 188(4) ms β- 145Cs (3/2-)#
146Xe 54 92 145.94775(43)# 146(6) ms β- 146Cs 0+
147Xe 54 93 146.95356(43)# 130(80) ms
 β- 147Cs 3/2-#
β-, n 146Cs

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