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84 Po Polonium

Metal, mass: 209 u, no stable isotopes, abundance rank (earth/space): 87/?

Click image to magnify. This is no polonium, but it could look like that. A silvery, radioactive metal, producing so much heat that it gets liquid and ionizes the surrounding air.

Polonium

Polonium is a relatively noble metal, similar to silver, but very radioactive. The most stable isotope is the synthetically produced 209Po with a half-life of 103 years. Almost all of the natural occuring Polonium is 210Po with a half-life of only 138 days. This has been used as a short-lived heat source in satellites and as igniter for atomic bombs. It is still used in tiny quantities for some purposes like ionizing air, although it is very dangerous. An average deadly dose of 210Po, when inhaled or swallowed, is one millionth of a gram. An increased dose of polonium 210 occurs in tobacco smoke. Most polonium emerges from radon via strong radioactive isotopes of bismuth and decays further to lead


Creative Commons License The images are licensed under a Creative Commons Attribution 3.0 Unported License, unless otherwise noted. Attribution by linking to the according element page.


Page last changed on January 03. 2010

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