Europium(III) bromide (or europium tribromide) is a crystalline compound, a salt, made of one
europium
Europium is a chemical element; it has symbol Eu and atomic number 63. It is a silvery-white metal of the lanthanide series that reacts readily with air to form a dark oxide coating. Europium is the most chemically reactive, least dense, and soft ...
and three
bromine
Bromine is a chemical element; it has chemical symbol, symbol Br and atomic number 35. It is a volatile red-brown liquid at room temperature that evaporates readily to form a similarly coloured vapour. Its properties are intermediate between th ...
atoms.
Europium tribromide is a grey powder at room temperature.
It is odorless.
Europium tribromide is
hygroscopic
Hygroscopy is the phenomenon of attracting and holding water molecules via either absorption (chemistry), absorption or adsorption from the surrounding Natural environment, environment, which is usually at normal or room temperature. If water mol ...
.
Reactions
When vaporized, europium(III) bromide reacts by the equation:
*2 EuBr
3 → 2 Eu + 3 Br
2
Europium(III) bromide is also created through the equations:
*4 EuBr
2 + 4 HBr → 4 EuBr
3 + 2 H
2
References
{{Lanthanide halides
Bromides
Europium(III) compounds
Lanthanide halides