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polonium

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polonium

Radioactive, metallic element, atomic number 84, relative atomic mass 210. Polonium occurs in nature in small amounts and was isolated from pitchblende. It is the element having the largest number of isotopes (27) and is 5,000 times as radioactive as radium, liberating considerable amounts of heat. It was the first element to have its radioactive properties recognized and investigated.

Polonium was isolated in 1898 from the pitchblende residues analysed by French scientists Pierre and Marie Curie, and named after Marie Curie's native Poland.
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One political foe of Vladimir Putin who fled to London is ex-KGB agent Alexander Litvinenko, who was murdered by polonium poisoning in 2006.
Yet another rich Russian flees to UK; ASYLUM by The Mirror (London, England)
The family of the former Russian spy Alexander Litvinenko, who was poisoned with radioactive polonium two years ago, have finally been given the keys to their house after the property was declared free of contamination.
Litvinenko family can go home by guardian.co.uk / guardian.co.uk
Polonium-210 is found naturally in uranium ores, as it is formed as part of the route by which atoms of uranium decay to lead, although as explained later this was not the source of the polonium which killed Litvinenko.
Polonium poisoning - in a cup of tea; Expert verdict The death of ... by Huddersfield Daily Examiner (Huddersfield, England)
 
 
 
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