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Atomic: M.A.C. | Reference
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Isotopes of Thallium
Notable Isotopes show graph
203Tl [122 neutrons]
Abundance: 29.524%
Stable with 122 neutrons
204Tl [123 neutrons]
Abundance: synthetic
Half life: 3.78 years [ beta- ]
Decay Energy: 0.764 MeV
Decays to 204Pb.
Half life: 3.78 years [ Electron Capture ]
Decay Energy: 0.374 MeV
Decays to 204Hg.
204Tl (half life 3.78 years) is made by the neutron activation of stable thallium in a nuclear reactor.
205Tl [124 neutrons]
Abundance: 70.476%
Stable with 124 neutrons