Iridium

Wikipedia: Lawrencium Wikipedia: Lawrencium- Characteristics and history of the element. Lenntech: Lawrencium Lenntech: Lawrencium- Physical data and chemical properties. EnvironmentalChemistry.com: Lawrencium EnvironmentalChemistry.com: Lawrencium- Atomic structure, chemical and physical properties, and table of nuclides. ChemicalElements.com: Lawrencium ChemicalElements.com: Lawrencium- Basic information, atomic structure, and isotopes. It's Elemental: Lawrencium It's Elemental: Lawrencium- Basic physical and historical information.