Br
Element Nr. 35
Bromine
halogen
liquid
Entdeckt 1825
79.904
Atomgewicht (u)
-7.2 °C
Schmelzpunkt
58.8 °C
Siedepunkt
3.1028 g/cm3
Dichte
2.96
Elektronegativität
[Ar] 3d10 4s2 4p5
Elektronenkonfiguration
4
Periode
17
Gruppe
📖 Über Bromine
One of only two elements that are liquid at room temperature (the other being mercury). A reddish-brown, toxic liquid with a strong, unpleasant odor. Its name comes from the Greek "bromos" meaning stench. Bromine compounds were once widely used as flame retardants and in leaded gasoline, though many uses have been phased out due to environmental concerns.
🔧 Verwendungen und Anwendungen
- Flame retardants (in electronics and furniture)
- Water purification (alternative to chlorine)
- Photography (silver bromide)
- Pharmaceuticals
- Methyl bromide fumigant (being phased out)
💡 Wusstest du?
Fakt: Bromine is one of only two elements that exist as a liquid at standard room temperature and pressure. Mercury is the other. Bromine evaporates easily at room temperature, producing toxic reddish vapors visible above the liquid surface.