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astatine
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A highly unstable
radioactive
element, the heaviest of the halogen series, that resembles iodine in
solution
. Its longest lived isotope has a mass number of 210 and has a
half-life
of 8.3 hours.
"
Oooh
, I
made
Asta-*BOOOOOOOOOOOOOM*"
by
Tarn
June 12, 2005
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