Selenium

From Conservapedia

Selenium
Name	Selenium
Symbol	Se
Atomic number	34
Atomic mass	79.0 amu
Classification	Non-metal
Crystal structure	Hexagonal
Color	Gray
Date of discovery	1817
Name of discoverer	Jons Berzelius
Name origin	From the Greek word Selênê (Moon)
Uses	Photoelectric cells, TV cameras
Obtained from	Refining of lead, copper, nickel