Bromine

WebElements: Cerium WebElements: Cerium- Extensive information on history, uses, occurrence, compounds, and properties. Wikipedia: Cerium Wikipedia: Cerium- Properties of the element, including its history, applications, and characteristics. EnvironmentalChemistry.com: Cerium EnvironmentalChemistry.com: Cerium- Atomic structure, chemical and physical properties, and table of nuclides. ChemicalElements.com: Cerium ChemicalElements.com: Cerium- Basic information, atomic structure, and isotopes. It's Elemental: Cerium It's Elemental: Cerium- Basic physical and historical information.