Bromine

Bromine
Bromine
Symbol Br
Atomic Number 35
Atomic Mass 54.9380 g.mol -1
Discovered by Johan Gottlieb Gahn

Chemical Properties Of Bromine

Group 17 Melting point −7.2°C, 19°F, 266 K
Period 4 Boiling point 58.8°C, 137.8°F, 332 K  
Block p Density (g cm−3) 3.1028
Atomic number 35 Relative atomic mass 79.904  
State at 20°C Liquid Key isotopes 79Br
Electron configuration [Ar] 3d54s2 CAS number 7726-95-6
ChemSpider ID 4514586 ChemSpider is a free chemical structure database

What is Bromine?

  • Bromine is a chemical element with the appearance of a deep red, noxious liquid being one of the members of the halogen elements of the periodic table.
  • This element has an appreciable vapor pressure at room temperature.

Uses Of Bromine

  • Bromine is a good oxidizing agent like other chlorine water and more useful as it does not decompose readily.
  • It also liberates free iodine from iodide- containing solutions and sulfur from hydrogen sulfide.
  • Sulfurous acid is oxidized to sulfuric acid by bromine water.

Properties Of Bromine

  • The electron affinity of this metal is very high and much similar to the chlorine.
  • It is a less powerful oxidizing agent as compared to the chloride ion and that too because of weaker hydration of the bromide ion.
  • The electron affinity of this metal is very high and much similar to the chlorine.
  • It is a less powerful oxidizing agent as compared to the chloride ion and that too because of weaker hydration of the bromide ion.
  • A metal-bromine bond is also weaker than the corresponding metal-chlorine bond.

Certain Facts About Bromine

  • This element is a bleach and is poisonous in fluid form, the vapors of it are dangerous for human skin, eyes and the respiratory tract.
  • It can also cause severe burns, a concentration of 1 ppm can lead to eye-watering and one can start to cough when inhalation of concentration below 10 ppm occurs.

Practise This Question

The correct set of four quantum numbers for the valence electrons of Rb (Z = 37) is: