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Polonium
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Chemical element with atomic number 84 (Po)
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Polonium is a chemical element; it has symbol Po and atomic number 84. A rare and highly radioactive metal (although sometimes classified as a metalloid) with no stable isotopes, polonium is a chalcogen and chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic...

Instance of
Chemical element
Subclass of
Post-transition metal
Chalcogen
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