FACULTY OF CHEMICAL TECHNOLOGY IN SPLIT
PERIODIC TABLE OF THE ELEMENTS version 1.7
Br
English: Bromine
French: Brome
Croatian: Brom
German: Brom
Italian: Bromo
Atomic number: 35
Group numbers: 17
Period: 4
Standard state (20 °C): liquid
Bromine was discovered by Antoine J. Balard (France) in 1826. The origin of the name comes from the Greek word bromos meaning stench. It is reddish-brown liquid with suffocating, irritating fumes. Gives off poisonous vapour. Causes severe burns. Oxidizer.
Electronic configuration: [Ar] 3d10 4s2 4p5
Relative atomic mass: 79.904(1)
Formal oxidation number: -1 +1 +5
Electronegativities: 2.96
Thermal conductivity: 0.0047 W/(m K)
Electrical resistivity (20 °C): - μΩcm
Atomic radius: 114.5 pm
Density (g/dm3): 4050 (123 K)
3122.6 (293 K)
7.59 (gas, 273 K)
Molar volume (cm3/mol): 19.73 (123 K)
25.59 (293 K)
21055.07 (gas, 273 K)
Melting point: -7.2 °C
Boiling point: 58.78 °C
Critical temperature: 311 °C
Heat of fusion: 10.8 kJ/mol
Heat of vaporization: 30.5 kJ/mol
Heat of atomization: 117.943 kJ/mol
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.
34Se <= 35Br => 36Kr
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Periodic Table of the Elements
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Last modified:
29.03.2003
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