Halogen Family

Cody Johns

Who Discovered The Halogen Atoms?

Fluorine(F)

Chlorine(Cl)

Bromine(Br)

1886- Isolated by Ferdinand-Frèdèric-Henri Moissan (France).

1774- Prepared by Carl Wilhelm Scheele (Sweden), Identified by Sir Humphry Davy (UK) in 1810.

1826- Discovered by Antoine-Jérôme Balard (France).

Other Discoverers

Iodine(I)

Astatine(At)

1811- Discovered by Bernard Courtois (France).

1940- Synthesized by Dale R. Corson & K.R. Mackenzie (USA) & Emilio Segrè (Italy/USA).

Common Properties

All highly reactive with Alkali Metals Also all very reactive with Alkali Earth

Metals All halogen family elements have 7 outer

valance electrons

Elements in the Halogen Family

FLUORINE, CHLORINE, BROMINE, IODINE, ASTATINE

Uses Of These Elements

•Toothpaste•Swimming Pool Cleaners•Disinfectants•Cooling Agents•Photograph•Water Cleaners