Periodic table

Tellurium-128 (Te-128)

Identity

Protons
52
Neutrons
76
Mass number
128
Mass
127.90 ± 0.76 u
Mass excess
-88.994 MeV
Spin
0+

Stability

Half-life: 2.25 × 10²⁴ years

Natural occurrence

31.74 % of tellurium

Decays to

All isotopes of tellurium