Element overview
Astatine (At) is element 85 with a listed atomic mass of 210 u. It is in group 17 and period 6. Its category is halogen.
Atomic properties
Electron configuration: not listed. Electronegativity: not established. Common oxidation states: not listed.
Physical properties
Density: not listed; melting point: not listed; boiling point: not listed. Values depend on conditions, phase and source.