Selenium

Selenium is a chemical element in the periodic table that has the symbol Se and atomic number 34. This 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. This element is found in sulfide ores such as pyrite.

Related Topics:
Chemical element - Periodic table - Atomic number - Nonmetal - Sulfur - Tellurium - Metal - Electricity - Photocell - Sulfide - Pyrite

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