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BookmarkSelenium is a chemical element in the periodic table that has the symbol Se and atomic number 34.
It is a toxic nonmetal that is chemically related to sulfur and tellurium.
It occurs in several different forms but one of these is a stable gray metallike form that conducts electricity better in the light than in the dark and is used in photocells.
For more information about the topic Selenium, read the full article at Wikipedia.org, or see the following related articles:
Germanium — Germanium is a chemical element in the periodic table that has the symbol Ge and atomic number 32. This is a lustrous, hard, silver-white, metalloid ... > read more
Tellurium — Tellurium is a chemical element in the periodic table that has the symbol Te and atomic number 52. A brittle silver-white metalloid which looks like ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Selenium at Wikipedia.org. See the Wikipedia copyright page for more details.
