Atomic Weights and Isotopic Compositions for Xenon
Description of Quantities and Notes

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 124
Relative Atomic Mass = 123.9058920(19)
Isotopic Composition = 0.000952(3)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 126
Relative Atomic Mass = 125.9042983(38)
Isotopic Composition = 0.000890(2)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 128
Relative Atomic Mass = 127.9035310(11)
Isotopic Composition = 0.019102(8)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 129
Relative Atomic Mass = 128.9047808611(60)
Isotopic Composition = 0.264006(82)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 130
Relative Atomic Mass = 129.903509349(10)
Isotopic Composition = 0.040710(13)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 131
Relative Atomic Mass = 130.90508406(24)
Isotopic Composition = 0.212324(30)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 132
Relative Atomic Mass = 131.9041550856(56)
Isotopic Composition = 0.269086(33)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 134
Relative Atomic Mass = 133.90539466(90)
Isotopic Composition = 0.104357(21)
Standard Atomic Weight = 131.293(6)
Notes = g,m

Atomic Number = 54
Atomic Symbol = Xe
Mass Number = 136
Relative Atomic Mass = 135.907214484(11)
Isotopic Composition = 0.088573(44)
Standard Atomic Weight = 131.293(6)
Notes = g,m

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