Science

Overview and a number of publications in PDF format.

Basic physical and historical information.

Basic information, atomic structure, and table of isotopes.

Atomic structure, properties, and table of nuclides.

Physical data, chemical properties, health and environmental effects.

Details the properties of the element, including its history, applications, and characteristics.

Full text of the monograph by William J. Maeck (Phillips Petroleum Company, Atomic Energy Division, Idaho Falls, Idaho).

Extensive information on history, uses, occurrence, compounds, and properties.