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n. Symbol Ts
An artificially produced radioactive element with atomic number 117 whose most stable isotopes have a mass number of 293 and 294, with the lighter, more stable isotope having a half-life of less than 90 milliseconds.
[Tenness(ee) + -ine (so called because members of the team involved in its synthesis were associated with the Oak Ridge National Laboratory; the University of Tennessee, Knoxville; and Vanderbilt University, all in Tennessee).]
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