Bromine

Images

Image

Attribution: W. Oelen

Animated Bromine

History

From the Greek word bromos, stench. Discovered by Balard in 1826, but not prepared in quantity until 1860.

Sources

A member of the halogen group, bromine is obtained from natural brines from wells in Michigan and Arkansas. Some bromine is extracted today from seawater, which contains only about 85 ppm.

Uses

Bromine is used in making fumigants, flameproofing agents, water purification compounds, dyes, medicines, sanitizers, inorganic bromides for photography, etc. Organic bromides are also important.

General Info

AtomicNumber
35
Symbol
Br
Name
Bromine

Atomic Info

Appearance
AtomicWeight
79.904(1)
Color
A62929
ElectronicConfiguration
[Ar] 3d10 4s2 4p5
ElectronegativityInPauling
2.96
AtomicRadiusInPM
114
IonRadiusInPM
196 (-1)
VanDerWaalsRadiusInPM
185
IEinKJmol
1140
EAinKJmol
-325
OxidationStates
-1, 1, 3, 4, 5, 7
StandardState
liquid
BondingType
covalent network
MeltingPoint
266
BoilingPoint
332
Density
3.12
State
Diatomic nonmetal
DiscoveredYear
1826