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Periodic table
›
xenon
›
Xe-128
Xenon-128 (Xe-128)
Identity
Protons
54
Neutrons
74
Mass number
128
Mass
127.9035 ± 0.0056 u
Mass excess
-89.861 MeV
Spin
0+
Stability
stable
Natural occurrence
1.910 %
of xenon
Produced by
Te-128
All isotopes of xenon