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  • noun

Synonyms for astatine

a highly unstable radioactive element (the heaviest of the halogen series)

References in periodicals archive ?
Iodine is rarely used as a flame retardant, and astatine rarely occurs in nature.
Iodine and astatine complete the group, but are not the subjects of primary consideration for electronics manufacturers.
Group VII B of the periodic table contains five elements which are called halides in the reduced state and halogens in the oxidized state: fluorine (MW=19); chlorine (MW=36); bromine (MW=80); iodine (MW=127); and astatine (MW=210).
Fluorine is a so-called halogen, occupying the periodic table's next-to-last column, along with chlorine, bromine, iodine, and astatine.
To date, 37 patients in the United States have been treated with bismuth 213 or astatine 211 and 11 patients in Europe.