Basic information, atomic structure, and isotopes.

Article by Lars Fredrick Nilson.

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

Basic physical and historical information.

History, sources, properties, costs, and uses.

Data tables and historic information.

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

Image, animation, sources, use, physical information, 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.