Polonium meaning

pə-lōnē-əm
A radioactive metallic element, occurring naturally in small quantities as a product of radium disintegration and produced synthetically by bombarding bismuth or lead with neutrons. Most isotopes decay by alpha-particle emission; the most stable are Po-208 and Po-209, with half-lives of 2.9 years and 102 years, respectively. Po-210, with a half-life of 138.4 days, is the most readily available isotope and is extremely toxic. Atomic number 84; melting point 254°C; boiling point 962°C; specific gravity 9.20; valence 2, 4, 6.
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A radioactive, nonmetallic chemical element formed naturally by the disintegration of radium or synthetically by the neutron irradiation of bismuth followed by beta decay: used as a power source in space satellites, as an aid in inducing electric discharges, etc.: symbol, Po; at. no. 84
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A very rare, naturally radioactive, silvery-gray or black metalloid element. It is produced in extremely small amounts by the radioactive decay of radium or the bombardment of bismuth or lead with neutrons. Atomic number 84; melting point 254°C; boiling point 962°C; specific gravity 9.20; valence 2, 4.
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A chemical element (symbol Po) with atomic number 84.
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Origin of polonium

  • From Medieval Latin Polōnia Poland (the native country of Pierre and Marie Curie, the element's discoverers)

    From American Heritage Dictionary of the English Language, 5th Edition

  • New Latin Polonia (“Poland")

    From Wiktionary