samarium

Traductions

• anglais

  Date : 1983

  Définition

  An element. State: Solid; Group: IIB (Lanthanide Series); Atomic No.: 62; Atomic Wt.: 150.4; Valence: 2,3; Atomic No.: 62; Isotopes: 7 stable. Samarium, m.p. 1072 °C (1962 °F), is a member of the rare-earth series of metals. It is very hard and steel-like in appearance. It is a reducing agent for many metallic oxides, carbon monoxide, and carbon tetrachloride. It is combustible at about 150 °C (300 °F).

  Note :

  It has a high neutron absorption capacity; its compounds have important specialized uses in glass, phosphors, lasers, and thermoelectric devices. Its scarcity restricts wider use.

  Termes :

  1. samarium
  2. Sm

  [Sm] Symbol for samarium; the name is thought to be derived from the mineral source in which the element was discovered (samarskite).