It's Elemental: Chromium - Basic physical and historical information. ChemicalElements.com: Chromium - Basic information, atomic structure, and isotopes. USGS Minerals Information: Chromium - Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). EnvironmentalChemistry.com: Chromium - Atomic structure, chemical and physical properties, and table of nuclides. Wikipedia: Chromium - Properties of the element, including its history, applications, and characteristics. Radiochemistry of Chromium - Full text of the monograph by J. Pijck (Laboratory for Analytical Chemistry, University of Ghent, Ghent, Belgium). WebElements: Chromium - Extensive information on history, uses, occurrence, compounds, and properties of the element.