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1 day ago · 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 ...
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Apr 25, 2024 · Polonium is a rare, radioactive, silvery-gray or black metallic element of the oxygen group, discovered by Pierre and Marie Curie in 1898. It is used in industry, nuclear physics, and as a source of alpha and neutron radiation.
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May 11, 2024 · pitchblende. radioactivity. radium. Pierre Curie (born May 15, 1859, Paris, France—died April 19, 1906, Paris) was a French physical chemist, cowinner with his wife Marie Curie of the Nobel Prize for Physics in 1903. He and Marie discovered radium and polonium in their investigation of radioactivity.
- The Editors of Encyclopaedia Britannica
May 15, 2024 · 255K subscribers. 0. 1 view 3 minutes ago INDIA. 👩⚕️🤝 Welcome back to our 'One Day, One Information' series by Career Point Kota! Today, we explore the fascinating story behind the discovery of...
May 14, 2024 · Definitions of polonium. noun. a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor. synonyms: Po, atomic number 84. see more.
May 13, 2024 · Alexander Litvinenko (born December 4, 1962, Voronezh, Russia, U.S.S.R.—died November 23, 2006, London, England) was a Russian security agent who investigated domestic organized crime in his role as a member of the KGB and its successor (from 1994) the Federal Security Service (FSB).
3 days ago · Marie's intelligence in science follows in the footsteps of her father, Wladyslaw, who was a mathematics and physics teacher.Marie's mother, Bronislawa, was ...
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- Arif Aini
