Data tables and historic information.

Basic information, atomic structure, and isotopes table.

Atomic structure, chemical and physical properties, and table of nuclides.

Basic physical and historical information.

History, sources, properties, and costs.

Physical data, chemical properties, health and environmental effects.

Full text of the monograph by M. T. Kinsley (Brookhaven National Laboratory, Upton, New York). [PDF]

Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).

Image, general and physical information, and key isotopes.

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

Properties of the element, including its history, applications, and characteristics.