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Science Innovation Centre · 085 · Astatine

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Astatine is a highly radioactive element and it is the heaviest known halogen. Its chemical properties are believed to be similar to those of iodine. Is has been little researched because all its isotopes have short half-lives. All that is known about the element has been estimated from knowing its position in the periodic table below iodine and by studying its chemistry in extreme diluted solutions.

Astatine is never encountered outside nuclear facilities or research laboratories. Total world production of astatine to date is estimated to be less than a millionth of a gram, and virtually all of this has now decayed away.