Bromine

35
Br
79.904(1)

old rolls of photography film
Bromine is used in photographic film.

Properties

Symbol Name Atomic Number Atomic Weight Group Number
Br Bromine 35 79.904(1) 17

Description

Standard State: liquid at 298 K
Color: red-brown, metallic luster when solid

Bromine was discovered by Balard in 1826, but not until 1860 was Bromine prepared in quantity. Bromine, a member of the halogen family, will volatilize at room temperature to produce a very unpleasant odor that irritates the eyes and throat.   Caution should be taken when handling Bromine because it poses a serious health risk.