Selenium

=Selenium= By: Sebastian


 * Atomic Number:** 34


 * Protons:** 34


 * Electrons:** 34
 * Neutrons:** 45


 * Average Atomic Mass:** 78.96


 * Isotopes:** Se-74, Se-76, Se-77, Se-78, Se-80, Se-82


 * Discovery:** Selenium was discovered in 1818 by Swedish chemists Jons Jacob Berzelius and J.G. Gahn. They were studying chemicals used in making sulfuric acid and thought they found Tellerium, but after a closer look at it, they realized they had found a new element. Jons and J.G. named it Selenium.


 * Name:** Selenium was named after the Greek word //Selênê// (Moon)


 * Uses:** Selenium is used in copy machines, TV cameras, a semiconducter in solar batteries, and colors glass red.


 * Interesting Facts**: Selenium is a semi-conductive element and can be used to treat cancer. It is also a silvery nonmetal. The half life is 650,000 years!


 * Video:** media type="youtube" key="IHrUtKjcAFE" height="344" width="425"


 * Sources**
 * [|www.corrosionsource.com/handbook/periodic] ; [|www.chemicalelements.com/elements/se.html] ; [|www.wiki.answers.com/Q/What_are_some_interesting_facts_on_Selenium] ; http://www.youtube.com/watch?v=IHrUtKjcAFE ; http://www.tqnyc.org/2006/NYC063220//selenium.jpg