Bromine - ASCII Periodic Table of the Elements

ASCII PERIODIC TABLE OF THE ELEMENTS

  Br

Relative atomic mass: 79.904 +- 0.001

English: Bromine
French: Brome
Croatian: Brom
German: Brom
Italian: Bromo
Spanish: Bromo

Atomic number: 35
Group numbers: 17
Period: 4
Standard state (20 ^oC): liquid

Discovery: 1826 Antoine-Jerome Balard (FR)

Bromine was discovered by Antoine-Jerome Balard (FR) in 1826. The origin of the name comes from the Greek word bromos meaning stench. It is a reddish-brown liquid with suffocating, irritating fumes that gives off poisonous vapour. It is a oxidizer that causes severe burns. Bromine occurs in compounds in sea water. It was once used in large quantities to make a compound that removed lead compound build up in engines burning leaded gasoline. Now it is primarily used in dyes, disinfectants and photographic chemicals. The price of 99.8 % pure bromine liquid is 79.10 € for 1000 g.

Electronic configuration: [Ar] 3d¹⁰ 4s² 4p⁵
Formal oxidation number: -1 +1 +5
Atomic radius: 114.5 pm

Electronegativities: 2.96
Thermal conductivity: 0.0047 W/(m K)
Electrical resistivity (20 ^oC): - microOhm cm

Melting point: -7.2 ^oC
Boiling point: 58.78 ^oC

Heat of fusion: 10.8 kJ/mol
Heat of vaporization: 30.5 kJ/mol
Heat of atomization: 117.943 kJ/mol