Selenium

Selenium
Properties
Atomic symbol	Se
Atomic number	34
Classification	Non-metal
Atomic mass	79.0 amu
Other Information
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