Compiles the element’s basic data, atomic structure, and chart of isotopes.

Discloses atomic structure, electronic configuration, chemical and physical properties, and outline of nuclides.

Resource on the element's basic physical and historical information.

Government-run repository for basic data on the element. Comes with details on properties and sources.

Monographic text on the element's radiochemistry by G. W. Leddicotte.

Offers extensive data on history, uses, sources, compounds, configurations and properties.