Isotopes of Tellurium
Notable Isotopes
120
Te
[68 neutrons]
Abundance:
0.096
Stable with 68 neutrons
122
Te
[70 neutrons]
Abundance:
2.603%
Stable with 70 neutrons
123
Te
[71 neutrons]
Abundance:
0.908%
Half life:
1.0 x 10
13
years [
Electron Capture
]
Decay Energy:
0.051
MeV
Decays to
123
Sb
.
124
Te
[72 neutrons]
Abundance:
4.816%
Stable with 72 neutrons
125
Te
[73 neutrons]
Abundance:
7.139%
Stable with 73 neutrons
126
Te
[74 neutrons]
Abundance:
18.952%
Stable with 74 neutrons
128
Te
[76 neutrons]
Abundance:
31.687%
Half life:
2.2 x 10
24
years [
Double beta decay
]
Decay Energy:
0.867
MeV
Decays to
128
Xe
.
128
Te has the longest
half-life
of any radioactive isotope.
130
Te
[78 neutrons]
Abundance:
33.799%
Half life:
7.9 x 10
20
years [
Double beta decay
]
Decay Energy:
2.528
MeV
Decays to
130
Xe
.