Key information
Atomic number: 
33
Atomic weight: 
74.99
Density: 
5720 kg/m³
Boiling point: 
886.16° K
Melting point: 
1090.16° K
Heat vapour: 
32.45 kJ/mol
Heat fusion: 
27.72 kJ/mol
Thermal conductivity: 
2.9 W/m/K

The word arsenic takes root in the Persian word zarnikh meaning "yellow orpiment".

Arsenic compounds are widely used as a wood preservative. Since the mid 1990's arsenic trioxide, a preservative, has accounted for 86% to 95% of US consumption of arsenic. Other uses include in glass and in non-ferrous alloys. High purity arsenic is used in a variety of semiconductor applications including solar cells, LEDs, lasers and PCBs.

Electron Shell: 
Amazon Books
Image of The Last Sorcerers: The Path from Alchemy to the Periodic Table
Author: National Academy of Sciences, Richard Morris
Publisher: Henry (Joseph) Press (2003)
Binding: Hardcover, 294 pages