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Po
Polonium
Atomic no.:
84
Atom. weight: 208.9824
Density: 9.196
Class:
heavy metal
Melting point: 254°C
Boiling point: 962°C
Colour: silvery shiny
   
Discoverer: Marie Curie
Place: Paris
Year: 1898

Polonium is a chemical element that has the symbol Po and atomic number 84. A rare and highly radioactive metalloid, polonium is chemically similar to tellurium and bismuth, and it occurs in uranium ores. Polonium has been studied for possible use in heating spacecraft. It is unstable; all isotopes of polonium are radioactive.

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