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Astatine
(At)
At
Category
Halogen
Relative atomic mass
210
Density
7
Melting point (°C)
302
Boiling point (°C)
337
Electronegativity (Pauling)
2.2
Discovery year
1940
Discovered by
Pierre Curie and Marie Curie
created by @lukaswyss
Astatine (At) – Element 85