Encyclopedic reference lists off the elements belonging to the group. Details their similar characteristics.

Covers the element's physical and chemical properties and lists its commercial uses.

Learn about the silver-colored element with the symbol Ba. Details its specifications and uses.

Examines the uses for this element that occurs in the mineral beryl and is extracted through electrolysis. View a photograph.

Find a profile of the element with an atomic number of four. Details the benefits of its presence in alloys.

Tells of the element's sources in nature. Provides a list of its commercial uses.

Offers a history of the discovery and uses of the element. Details the different forms of the element found in nature.

Read about calcium's chemical properties and compounds in this brief encyclopedia entry.

Features a color-coded spectra of neutral and singly ionized calcium undergoing electrical discharge excitation.

Discover how the element was found. Provides details about its physical and chemical properties.

Provides a history of the chemically active metal's discovery in 1775. Check out its properties and uses.

Names the functions and uses of the mineral magnesium in human nutrition. Includes deficiency and toxicity information.

Learn the physical properties and uses of this element usually found in gems.

Learn about the physical principles, uses, and origin of this metallic transition element.

Wisconsin Dept. of Natural Resources offers answers to FAQs about radium in drinking water and the associated health risks involved.

Describes this radioactive element with an atomic number of 88, and notes some of its past and present uses.

Discovered in 1790 and isolated in 1808, strontium is sometimes used in pyrotechnics. Read about its compounds.

Provides details about the two minerals that contain strontium, celestite and strontianite. With photographs of the minerals.

Offers insights in this element's properties, including its atomic number and weight, it reactivity, and its practical applications.

Outlines this element's chemical properties, describes its ores and how they are processed, and discusses its commercial and medicinal uses.