CERIUM

Etymology

The name 'cerium' comes from the asteroid Ceres, which was discovered in 1801, around the same time as the element.

Definition

Cerium is a metallic chemical element with the symbol Ce and atomic number 58. It is a soft, ductile, and silvery-white metal that tarnishes when exposed to air. Cerium is the most abundant of the rare-earth group and is commonly used in various industrial applications.

Historical Context

Cerium was first discovered in 1803 by Swedish chemist Jöns Jakob Berzelius and Wilhelm Hisinger. It has since been utilized in the production of misch metal, which is a key component in various alloys.

Cultural Significance

Cerium has cultural significance in the production of lighter flints and as a catalyst in various chemical reactions. It is also used in the manufacturing of glass, ceramics, and as a polishing agent.

Related Concepts

Ferrocium, a crude iron alloy containing a high percentage of cerium, is used for flints in cigarette lighters.

See Also

• Rare-earth elements
• Misch metal
• Lanthanide series