Electronic, thermal, and steric data along with an isotope table.

Basic information, atomic structure, and isotopes.

Article by P.E. Lecoq de Boisbaudran.

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

Data tables and historic information.

Basic physical and historical information.

Sources, properties, uses, and costs.

Physical data, chemical properties, health and environmental effects.

Statistics and information on the worldwide supply, demand, and flow of the element. [PDF]

General and physical information, key isotopes, and ionisation energies.

Extensive information on history, uses, occurrence, compounds, and properties of the element.

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