astatine
PubChem Notes:
Astatine Astatine. A radioactive halogen with the atomic symbol At, atomic number 85, and atomic weight 210. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism.
MediLexicon astatine - Medical Dictionary Definition for Term 'astatine'
[1. An artificial radioactive element of the halogen series; atomic no. 85, atomic wt. 211.
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