Science

Basic physical and historical information.

Basic information, atomic structure, and isotopes.

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

Physical data, chemical properties, and health effects.

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

Full text of the monograph by William T. Mullins and G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee).

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