Praseodymium « Elements « Chemistry

See also:

ChemGlobe: Praseodymium - Electronic, thermal, and steric data along with an isotope table.
ChemicalElements.com: Praseodymium - Basic information, atomic structure, and isotopes.
EnvironmentalChemistry.com: Praseodymium - Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Praseodymium - Basic physical and historical information.
LANL: Praseodymium - History, uses, production, and properties.
Lenntech: Praseodymium - Physical data, chemical properties, health and environmental effects.
Visual Elements: Praseodymium - Image, source, uses, physical information, and key isotopes.
WebElements: Praseodymium - Extensive information on history, uses, occurrence, compounds, and properties.
Wikipedia: Praseodymium - Properties of the element, including its history, applications, and characteristics.