Visual Elements: Chromium - - General and physical information, source, uses, key isotopes, and ionisation energies.
WebElements: Chromium - - Extensive information on history, uses, occurrence, compounds, and properties of the element.
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). [PDF] (December, 1964)
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