Astatine

Element information

Atomic properties

Mass: 209.98715 u

Electron configuration: [Xe]6s2 4f14 5d10 6p5

Oxidation states: 7, 5, 3, 1, -1

Electronegativity: 2.2

Physical properties

Density: 7 g/cm³

Standard state: solid

Melting point: 575 K

Boiling point: - K

₈₅At

Part of the Periodic Table 2 collection

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