Basic information, atomic structure, and isotopes.

Preparation, manufacture, uses, and details of reactions.

Data tables and historic information.

Information about chlorine and its derivatives from Euro Chlor, an affiliate of the European Chemical Industry Council (CEFIC.)

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

Numeric data, uses, and general information.

Basic physical and historical information.

History, properties, uses, and handling.

Physical data, chemical properties, health and environmental effects.

Image, animation, uses, biological role, and key isotopes.

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

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