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Periodic table
›
tellurium
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Te-123
Tellurium-123 (Te-123)
Identity
Protons
52
Neutrons
71
Mass number
123
Mass
122.9 ± 1.5 u
Mass excess
-89.171 MeV
Spin
1/2+*
Stability
stable
Natural occurrence
0.890 %
of tellurium
Decays to
electron capture
→
Sb-123
All isotopes of tellurium