Image, appearance, uses, physical information, and ionisation energies.

Full text of the monograph by Duane Neuman Sunderman (Battelle Memorial Institute, Columbus, Ohio) and Charles William Townley (Battelle Memorial Institute, Columbus, Ohio). [PDF]

Basic physical and historical information.

Basic information, atomic structure, and isotopes.

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

Data tables and historic information.

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

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

Physical data, chemical properties, and health effects.

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