Bromine: Data tables and historic information.
ChemGlobe: Bromine: Electronic, thermal, and steric data along with an isotope table.
ChemicalElements.com: Bromine: Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Bromine: Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Bromine: Basic physical and historical information.
LANL: Bromine: History, properties, uses, and production.
Lenntech: Bromine: Physical data, chemical properties, health and environmental effects.
USGS Minerals Information: Bromine: Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).
Visual Elements: Bromine: Source, uses, general and physical information, and key isotopes.
WebElements: Bromine: Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Bromine: Properties of the element, including its history, applications, and characteristics.