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Polonium Facts

Chemical & Physical Properties of Polonium

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Polonium is a rare, extremely radioactive metalloid or transition metal.

Polonium is a rare, extremely radioactive metalloid or transition metal. This is a photo of a thin film of polonium over a stainless-steel disk, used as an alpha-particle source.

Lapp, Ralph E. (1965). LIFE. ed. MATTER. LIFE Science Library.
Periodic Table of the Elements

Polonium

Symbol: Po

Atomic Number: 84

Discovery: Curie 1898

Atomic weight: [208.9824]

Electron configuration: [Xe] 4f14 5d10 6s2 6p4

Classification: semi-metal

Ground level: 3P2

Ionization potential: 8.414 ev

Physical form: Silvery metal

Melting point: 254°C

Boiling point: 962°C

Density: 9.20 g/cm3

Valence: 2, 4

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC (2006)

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