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- 47 (Atomic Number of Silver)
- Melting Point of Samarium in °F
Xe
Xenon
43 known isotopes (6 stable,
37 radioactive)
108Xe
Mass
107.954232 u
Abundance —
Half-life 54 microseconds
Spin/Parity 0+
Decay Mode(s) α (100%)
109Xe
Mass
108.950435 u
Abundance —
Half-life 13 milliseconds
Spin/Parity (7/2+)
Decay Mode(s) α (100%)
110Xe
Mass
109.944259 u
Abundance —
Half-life 93 milliseconds
Spin/Parity 0+
Decay Mode(s) α (64%), EC/β⁺ (36%)
111Xe
Mass
110.941470 u
Abundance —
Half-life 0.74 seconds
Spin/Parity —
Decay Mode(s) α (8%)
112Xe
Mass
111.935559 u
Abundance —
Half-life 2.7 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (98.8%), α (1.2%)
113Xe
Mass
112.933222 u
Abundance —
Half-life 2.74 seconds
Spin/Parity (5/2+)
Decay Mode(s) EC/β⁺ (100%), ECP (7%), α (0.011%)
114Xe
Mass
113.927980 u
Abundance —
Half-life 10.0 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
115Xe
Mass
114.926294 u
Abundance —
Half-life 18 seconds
Spin/Parity (5/2+)
Decay Mode(s) EC/β⁺ (100%), β⁺p (0.34%), α (0.0003%)
116Xe
Mass
115.921581 u
Abundance —
Half-life 59 seconds
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
117Xe
Mass
116.920359 u
Abundance —
Half-life 61 seconds
Spin/Parity 5/2(+)
Decay Mode(s) EC/β⁺ (100%), β⁺p (0.0029%)
118Xe
Mass
117.916179 u
Abundance —
Half-life 3.8 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
119Xe
Mass
118.915411 u
Abundance —
Half-life 5.8 m
Spin/Parity (5/2+)
Decay Mode(s) EC/β⁺ (100%)
120Xe
Mass
119.911784 u
Abundance —
Half-life 40 m
Spin/Parity 0+
Decay Mode(s) EC/β⁺ (100%)
121Xe
Mass
120.911453 u
Abundance —
Half-life 40.1 m
Spin/Parity 5/2(+)
Decay Mode(s) EC/β⁺ (100%)
122Xe
Mass
121.908368 u
Abundance —
Half-life 20.1 h
Spin/Parity 0+
Decay Mode(s) Electron capture (100%)
123Xe
Mass
122.908482 u
Abundance —
Half-life 2.050 h
Spin/Parity 1/2(+)
Decay Mode(s) EC/β⁺ (100%)
124Xe
Mass
123.905885 u
Abundance 0.0950%
Half-life 1.6E+14 years
Spin/Parity 0+
Decay Mode(s) Unknown
125Xe
Mass
124.906388 u
Abundance —
Half-life 16.9 h
Spin/Parity 1/2(+)
Decay Mode(s) EC/β⁺ (100%)
126Xe Stable
Mass
125.904297 u
Abundance 0.0890%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
127Xe
Mass
126.905184 u
Abundance —
Half-life 36.346 d
Spin/Parity 1/2+
Decay Mode(s) Electron capture (100%)
128Xe Stable
Mass
127.903531 u
Abundance 1.9100%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
129Xe Stable
Mass
128.904781 u
Abundance 26.4010%
Half-life Stable
Spin/Parity 1/2+
Decay Mode(s) —
130Xe Stable
Mass
129.903509 u
Abundance 4.0710%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
131Xe Stable
Mass
130.905084 u
Abundance 21.2320%
Half-life Stable
Spin/Parity 3/2+
Decay Mode(s) —
132Xe Stable
Mass
131.904155 u
Abundance 26.9090%
Half-life Stable
Spin/Parity 0+
Decay Mode(s) —
133Xe
Mass
132.905911 u
Abundance —
Half-life 5.2475 d
Spin/Parity 3/2+
Decay Mode(s) β⁻ (100%)
134Xe
Mass
133.905393 u
Abundance 10.4360%
Half-life 5.8E+22 years
Spin/Parity 0+
Decay Mode(s) 2B- (0%)
135Xe
Mass
134.907231 u
Abundance —
Half-life 9.14 h
Spin/Parity 3/2+
Decay Mode(s) β⁻ (100%)
136Xe
Mass
135.907214 u
Abundance 8.8570%
Half-life 2.165E21 years
Spin/Parity 0+
Decay Mode(s) 2B- (100%)
137Xe
Mass
136.911558 u
Abundance —
Half-life 3.818 m
Spin/Parity 7/2-
Decay Mode(s) β⁻ (100%)
138Xe
Mass
137.914146 u
Abundance —
Half-life 14.14 m
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
139Xe
Mass
138.918792 u
Abundance —
Half-life 39.68 seconds
Spin/Parity 3/2-
Decay Mode(s) β⁻ (100%)
140Xe
Mass
139.921646 u
Abundance —
Half-life 13.60 seconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
141Xe
Mass
140.926787 u
Abundance —
Half-life 1.73 seconds
Spin/Parity 5/2(-)
Decay Mode(s) β⁻ (100%), β⁻n (0.044%)
142Xe
Mass
141.929973 u
Abundance —
Half-life 1.23 seconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%), β⁻n (0.21%)
143Xe
Mass
142.935370 u
Abundance —
Half-life 0.511 seconds
Spin/Parity 5/2-
Decay Mode(s) β⁻ (100%), β⁻n (0%)
144Xe
Mass
143.938945 u
Abundance —
Half-life 1.15 seconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
145Xe
Mass
144.944720 u
Abundance —
Half-life 188 milliseconds
Spin/Parity —
Decay Mode(s) β⁻ (100%), β⁻n (5%)
146Xe
Mass
145.948518 u
Abundance —
Half-life 146 milliseconds
Spin/Parity 0+
Decay Mode(s) β⁻ (100%), β⁻n (6.9%)
147Xe
Mass
146.954482 u
Abundance —
Half-life 88 milliseconds
Spin/Parity —
Decay Mode(s) β⁻ (100%), β⁻n (8%)
148Xe
Mass
147.958508 u
Abundance —
Half-life 0.4 microseconds
Spin/Parity 0+
Decay Mode(s) Unknown
149Xe
Mass
148.964573 u
Abundance —
Half-life Unknown
Spin/Parity —
Decay Mode(s) β⁻ (100%)
150Xe
Mass
149.968878 u
Abundance —
Half-life Unknown
Spin/Parity 0+
Decay Mode(s) β⁻ (100%)
Decay mode abbreviations:
β⁻ = Beta minus decay, β⁺ = Beta plus decay, EC = Electron capture, α = Alpha decay
n = Neutron emission, p = Proton emission, SF = Spontaneous fission, IT = Isomeric transition
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