chemicalelements.info

Bromine

35
Br
Bromine
79.904

Properties

Symbol:Br
Atomic Number:35
Atomic Weight:79.904
Density:3.11 g/cm3
Melting Point:
266K
-7°C
19°F
Boiling Point:
332K
59°C
138°F

Electron Shells

2, 8, 18, 7

Bromine (Br) is a chemical element with atomic number 35. It belongs to a group of elements called halogens, and like other halogens, bromine is highly reactive.

There are two stable bromine isotopes, 79Br and 81Br, and they're almost equally abundant, giving bromine an atomic weight near 80.

Bromides (i.e. negative ions of bromine, Br) were frequently used as sedatives in the past, but have since been replaced by safer and more effective drugs.