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SE-LE-NI-UM 
Selenium is one of the more versatile elements of the periodic table. You can find it in many forms (allotropic forms) including reddish crystals and metallic gray. It was named after the moon when discovered in 1817 by the scientist Berzelius. While rare, selenium is normally found in minerals. Of the lesser members in the sulfur family, selenium is the most abundant in nature, often found in copper and lead mining. Tellurium and polonium are other members in the same family (and found in the same column of the periodic table).
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