Holmium(III) bromide is a crystalline compound made of one holmium atom and three bromine atoms.
Holmium bromide is a yellow powder at room temperature.
[6] Holmium bromide is odorless.
[5] Holmium(III) bromide is formed as a result of the reaction:[7] Holmium(III) bromide reacts with strong oxidising agents.
When involved in a fire, holmium bromide may release hydrogen bromide, and metal oxide fumes.