Astatine

The heaviest halogen and radioactive.


Symbol
At

Also known as
Alabamine

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Atomic number 85 Clip
Atomic / Molecular Weight 209.9871 gmol-1Clip
Melting Point 573 KClip
Boiling Point 623 KClip
Specific heat capacity 140 Jkg-1K-1Clip
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See also: Halide, Halogen, Periodic Table.

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Subjects: Chemistry