See also:

• Science: Chemistry: Elements: Transition Metals  (3)

ChemGlobe: Iridium - Electronic, thermal, and steric data along with an isotope table..

ChemicalElements.com: Iridium - Basic information, atomic structure, and table of isotopes..

EnvironmentalChemistry.com: Iridium - Atomic structure, chemical and physical properties, and table of nuclides..

It's Elemental: Iridium - Basic physical and historical information..

LANL: Iridium - History, properties, uses, and sources..

Lenntech: Iridium - Physical data, chemical properties, health and environmental effects..

Visual Elements: Iridium - Image, general and physical information, source, uses, key isotopes, and ionisation energies..

WebElements: Iridium - Extensive information on history, uses, occurrence, compounds, and properties..

Wikipedia: Iridium - Properties of the element, including its history, applications, and characteristics..

Radiochemistry of Iridium - Full text of the monograph by G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF] (October, 1961).