Column Descriptions
Relative Isotopic Standard
Isotope Atomic Mass Composition Atomic Weight Notes
_________________________________________________________________________
54 Xe 124 123.9058920(19) 0.000952(3) 131.293(6) g,m
126 125.9042983(38) 0.000890(2)
128 127.9035310(11) 0.019102(8)
129 128.9047808611(60) 0.264006(82)
130 129.903509349(10) 0.040710(13)
131 130.90508406(24) 0.212324(30)
132 131.9041550856(56) 0.269086(33)
134 133.90539466(90) 0.104357(21)
136 135.907214484(11) 0.088573(44)
_________________________________________________________________________
NIST | Physical Measurement Laboratory | Physical Reference Data | Atomic Weights and Isotopic Compositions Main Page