halogen - Printable version

From http://www.chemicalelements.com/groups/halogens.html:

The halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1. The halogens exist, at room temperature, in all three states of matter:

Solid- Iodine, Astatine

Liquid- Bromine

Gas- Fluorine, Chlorine

The Halogens are:

Fluorine

Chlorine

Bromine

Iodine

Astatine

Of most interest to our industry are the gaseous forms of Bromine and Iodine, used in Stage/Studio lamps due to the Halogen Cycle.

halogen Printable version