7 links
ChemicalElements.com: Chromium
chemicalelements.com
Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Chromium
environmentalchemistry.com
Atomic structure, chemical and physical properties, and table of nuclides.
Lenntech: Chromium
lenntech.com
Physical data, chemical properties, health and environmental effects.
Radiochemistry of Chromium
lib-www.lanl.gov
Full text of the monograph by J. Pijck (Laboratory for Analytical Chemistry, University of Ghent, Ghent, Belgium).
WebElements: Chromium
ebelements.com
Extensive information on history, uses, occurrence, compounds, and properties of the element.
Wikipedia: Chromium
en.wikipedia.org
Properties of the element, including its history, applications, and characteristics.