krypton

Domaine: chimiechimie minérale
Date: 1983

Définition :

Gaz incolore, inodore, insipide; cubique à l'état solide.

Note :

Emplois : gaz inerte pour les expériences de physique; remplissage de certaines lampes à incandescence; lampes de mineurs.

Termes :

krypton n. m.
Kr

Traductions

anglais
Date : 1983
Définition

An element. State: gas; group: noble gas; atomic no.: 36; atomic Wt.: 83.8; valence: 2; isotopes: 6 stable. Natural krypton is a gas occurring in trace percentages in air, from which it is exracted by fractionation processes. It was formerly classed as an inert gas but later was found to form a few transient compounds with fluorine. It is more than twice as heavy as air and can be prepared in liquid and solid forms at very low temperatures.

Note :

It is used in fluorescent light tubes, in flash equipment for photography, and to a limit extent in lasers. The radioactive krypton-85 is used in analytical determinations.

Termes :
1. krypton
2. Kr
[Kr] Symbol for the element krypton, the name being derived from the Greek word for hidden.