Howstuffworks "Metalloids - Encyclopedia Entries"

Learn about Metalloids and get information on topics related to Metalloids.

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> Gaseous Nonmetals
> Light Metals
> Other Metals
> Other Nonmetals
> Rare-Earth Metals
> Transition Metals

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Featured Metalloids Entry

Selenium, sih LEE nee uhm, is a semimetallic chemical element. In nature, it most often occurs in combination with such metals as copper, lead, and silver. The Swedish chemist Jons J. Berzelius first isolated selenium in 1817. Human beings and other animals require tiny amounts of selenium in their diet. The element helps the body convert fats and protein into energy. Foods that supply selenium include meat and fish. More »

THE METALLOIDS LIBRARY

Antimony

Antimony, AN tuh moh nee, a chemical element, is a bluish-white, brittle metal. It is used to... More >>

Arsenic

Arsenic, AHR suh nihk or AHRS nihk, is a semimetallic chemical element. It is a deadly poison,... More >>

Selenium

Selenium, sih LEE nee uhm, is a semimetallic chemical element. In nature, it most often occurs in... More >>

Tellurium

Tellurium, teh LUR ee uhm, is a rare semimetallic chemical element. Pure tellurium often appears... More >>