Name:  Bromine

Atomic Symbol and Mass Number: Br [35]

Electron Configuration: [Ar] 3d   4s  4p

Atomic Radii: 185 pm

Electron Affinity: 324.6 kJ mol-1

Oxidation states: −1, +1, +3, +5, +7

Electronegativity value: 2.96

Elemental Group: Halogen

Uses and properties:

• The only non-metallic element that is liquid at normal temperature

• Dense, reddish-brown liquid which evaporates easily at room temperature to a red vapor with a strong, chlorine-like odor

• Less reactive than chlorine or fluorine but more reactive than iodine

• Acts as a bleaching agent

• Compounds are used in pesticides, water purification, and as flame-retardant in plastics

• Potassium bromide is used as a source of bromide ions for the manufacture of silver bromide for photographic film

 

Lewis diagram: