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See all on Wikipediahttps://en.wikipedia.org/wiki/PoloniumPolonium is a chemical element with the symbol Po and atomic number 84. Polonium is a chalcogen. A rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: … See more
Po is an alpha emitter that has a half-life of 138.4 days; it decays directly to its stable daughter isotope, Pb. A milligram (5 curies) of Po emits about as many alpha particles per second as 5 grams of Ra, which means it's 5,000 times … See more
Polonium-based sources of alpha particles were produced in the former Soviet Union. Such sources were applied for measuring the thickness of industrial coatings via attenuation of alpha radiation.
Because of intense alpha radiation, a one-gram sample of Po … See more
Polonium is a very rare element in nature because of the short half-lives of all its isotopes. Seven isotopes occur in traces as decay products: Po, Po, and Po occur in the decay chain of U; Po and Po occur in the decay chain of U; Po and Po occur in the decay chain of See more
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Polonium can be hazardous and has no biological role. By mass, polonium-210 is around 250,000 times more toxic than hydrogen cyanide (the LD50 for Po is less than 1 microgram for an average adult (see below) compared … See more• Bagnall, K. W. (1962). "The Chemistry of Polonium". Advances in Inorganic Chemistry and Radiochemistry. Vol. 4. New York: Academic Press. pp. 197–226. doi See more
Wikipedia text under CC-BY-SA license- https://de.wikipedia.org/wiki/Polonium
Polonium ist ein radioaktives chemisches Element mit dem Elementsymbol Po und der Ordnungszahl 84. Im Periodensystem steht es in der 6. Hauptgruppe, bzw. der 16. IUPAC-Gruppe, wird also den Chalkogenen zugeordnet. Das häufigste in der Natur vorkommende Isotop Po-210 findet sich als vorletztes Glied der Zerfallsreihe von Uran-238 in uranhaltigen Mineralien, inzwischen wird jedoch Polonium für technische oder wissenschaftliche Anwendungen hauptsächlich durch Einwirkung …
Wikipedia · Text under CC-BY-SA license - https://simple.wikipedia.org/wiki/Polonium
WebPolonium is a rare radioactive metalloid. It is chemical element 84 on the periodic table and its symbol is Po. It was discovered in 1898 by Marie and Pierre Curie. Polonium is highly …
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- https://en.wikipedia.org/wiki/Polonium-210
- Polonium-210 is an isotope of polonium. It undergoes alpha decay to stable 206Pb with a half-life of 138.376 days, the longest half-life of all naturally occurring polonium isotopes. First identified in 1898, and also marking the discovery of the element polonium, 210Po is generated in the decay chain of uranium-238 and radium-226. 210Po is a promi...
- Names: polonium-210, Po-210, radium F
- Symbol: ²¹⁰Po
- Neutrons (N): 126
- https://cs.wikipedia.org/wiki/PoloniumSee more on cs.wikipedia.orgPolonium je členem uran-radiové, neptuniové i thoriové rozpadové řady a v přírodě se proto vyskytuje v přítomnosti uranových rud. Právě z uranové rudy – jáchymovského smolince bylo polonium poprvé získáno jako elementární prvek, přestože se jeho koncentrace pohybuje v množství 0,1 mg na tunu.
- Chemická skupina: Nepřechodné kovy
- Cizojazyčné názvy: lat. Polonium
- Název, značka, číslo: Polonium, Po, 84
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- https://sco.wikipedia.org/wiki/Polonium
WebPolonium - Wikipedia Jump to content Rake Mak accoont Personal tuils Mak accoont Log in Pages for logged out editors learn more Collogue for this IP Contreibutions Navigation …
- https://fi.wikipedia.org/wiki/Polonium
WebPolonium ( lat. polonium) on alkuaine, jonka kemiallinen merkki on Po ja järjestysluku 84 sekä CAS-numero 7440-08-6. Se on radioaktiivinen puolimetalli, joka nimettiin löytäjänsä …
- https://fr.wikipedia.org/wiki/Polonium
WebLe polonium est un métal pauvre de faible point de fusion (254 °C). Il est aussi très volatil et finirait par se sublimer entièrement même à température ambiante. Il perd 50 % de sa …
- https://sv.wikipedia.org/wiki/Polonium
WebPolonium är ett radioaktivt metalliskt sällsynt grundämne. Polonium är kraftigt alfastrålande och används därför som strålkälla. De flesta poloniumisotoper är kortlivade stadier i …
- https://hu.wikipedia.org/wiki/Polónium
WebA polónium kémiai elem. Rendszáma 84, vegyjele Po. Ritka és nagyon erősen radioaktív anyag. Nem egyértelmű, hogy félfém vagy fém. Kémiai tulajdonságaiban hasonlít a …
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