6 links
ChemicalElements.com: Molybdenum
chemicalelements.com
Basic information, atomic structure, and table of isotopes.
EnvironmentalChemistry.com: Molybdenum
environmentalchemistry.com
Atomic structure, chemical and physical properties, and table of nuclides.
Lenntech: Molybdenum
lenntech.com
Physical data, chemical properties, health and environmental effects.
Radiochemistry of Molybdenum
lib-www.lanl.gov
Full text of the monograph by E. M. Scadden (U.S. Naval Radiological Defense Laboratory, San Francisco, California). [PDF]
Wikipedia: Molybdenum
en.wikipedia.org
Properties of the element, including its history, applications, and characteristics.