SeleniumBri Boyd

SeleniumSymbol- Se

Atomic number- 34

Atomic mass- 78.96

Melting point- 430°F

Boiling point- 1265°F

Number of protons/electrons- 34

Number of neutrons- 45

Classification- non-metal

Crystal structure- hexagonal

Density- 4.79 g/cm3

Color- gray, red, black

Natural state of matter- solid

Discovery of Selenium

Jöns Jacob Berzelius

Discovered in 1817

Uses

Photography (photocells)

Certain Foods

Anti-dandruff shampoo

Glass

Cancer treatments

Etc.

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