Adopt An Element
Description: selenium
Image copyright: chemicool.com
The symbol is Se. The atomic number is 34. The atomic mass is 74.96. The normal phase is a solid. The boiling point is 958 degreese(c.),the melting point is 493 degreese(c.). Selenium was discovered by Jons J. berzelius in 1817. The colors are gray and red(crystalline), black or red (amorphous). Selenium is used in the glass industry to decolorize glass. Selenium is considered to be toxic if taken in excess. the coast is $14.00 for 100g
