RUBIDIO

The rubidio is a chemical element of the periodic table. His symbol is the Rb and his atomic number is 37. The rubidio is an alkaline soft metal, of silver color brilliant white that it mists rapidly to the air, very I reactivate (it is the second alkaline element more electropositivo) and one can find liquid to temperature set. As other elements of the group 1 can burn spontaneously in air with flame of violet yellowish color, reacts violently with the water detaching hidrógenoy form it amalgamates with mercury.

It can form alloys with the gold, other alkaline metals, and alcalinotérreos, antimony and bismuth.

The rubidio (of the Latin rubidus, blond) was discovered in 1861 by Robert Bunsen and Gustav Kirchhoff in the lepidolita using a spectroscope on having detected both red stripes typical of the spectrum of emission of this element and that are the reason of his name.

This element started being used in photoelectric cells.

Information obtained of www.wikipedia.org and www.webelements.com