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By emcelhannon , August 17, in Chemistry. How would one calculate and illustrate the harmlessness of the ridiculously long half life of Bi.
It is a pentavalent post-transition metal and one of the pnictogens with chemical properties resembling its lighter homologs arsenic and antimony. Elemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores.
Original image by Heinrich Pniok www. The chemist is correct in noting that all elements heavier than bismuth element 83 have no stable isotopes, and only a few which have isotopes with very long half-lives such as thorium and uranium occur in substantial quantities in nature.
Bismuth , a very neat looking little element, is one of those things in life that went largely unrecognized for a long time, until the world wised up and started to take notice. Because it can be a little ambiguous looking, historically bismuth was often confused with either lead or tin.
Bismuth chemical symbol Bi , atomic number 83 is a brittle, white crystalline metal with a pink tinge. It acquires an iridescent oxide tarnish that shows many refractive colors, ranging from yellow to blue.
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Several years ago, there were hundreds of companies producing and exploring fit uranium.
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