LUTECIO

The lutecio is a chemical element of atomic number 71 which chemical symbol is Lu. His name comes from the former name of the city of Paris, in Latin, Lutetia.

The lutecio is a trivalent metal of white color silvering resistant to the corrosion and relatively stablly in air presence. It is the heaviest and hard element of all the rare lands.

The lutecio, was discovered of independent form in 1907 by the French scientist Georges Urbain and the mineralogist Carol Auer von Welsbach.

The metal is a silver and relatively stable white in the air. The pure metal lutecio has been isolated only in the recent years and is one of the most difficult to prepare.

Information extracted of www.wikipedia.org

mercury

It is a chemical elemnto whose symbol is HG .Debe his name to the planet of the same name, which is the first planet of the solar system.

Due to a water plant, called Hydrágiros (of the Greek)

Hydrágiros was meaning water of silver, or liquid silver. It is weighed and capablly of flowing and running, since it was not spreading as the water.

Teofrasto explains another way of obtaining mercury, revealing cinnabar with iron.

The Romans started using it (they were calling her Argentum Vivum). In the Middle Ages there begin to be identified the adverse effects of the use of mercury.

information obtained of www.wikipedia.com and www.wbelemens.com

ARGON

The argon is a chemical element of atomic number 18 and symbol Ar. It is the third party and inert of the rare, colorless gases as them, constitutes concerning 1 % of the air.

Henry Cavendish, in 1785, exposed a sample of nitrogen to electrical unloads repeated in presence of oxygen to form oxide of nitrogen that later it was eliminating and thought that about 1 % of the original gas could not dissolve, affirming then that not all the " air flogisticado " was a nitrogen.

In 1892 Lord Rayleigh discovered that the atmospheric nitrogen had a major density that the pure nitrogen obtained from the saltpeter. Did Rayleigh and William Ramsay demonstrate that the difference owed to itself to the presence of the second gas little reagent heavier than the nitrogen, announcing the discovery of the argon (from the Greek to?? Ó?, Argus, inactive, vague or lazy) in 1894, it announced that it was received by enough skepticism by the scientific community.

In 1904 Rayleigh it received the prize Nobel prize of Physics for his investigations brings over of the density of the most important gases and the discovery of the existence of the argon.

Information obtained of www.wikipedia.org

CHROME

The chrome is a chemical element of atomic number 24 that is in the group 6 of the periodic table of the elements. His symbol is Cr. It is a metal, hardly, fragile, steely and brilliant grey. Of the Greek khroma, color, for the usefulness that the combinations of the chrome have in painting. Siberia red of lead (crocoíta) is a mineral of chrome estimated as a red pigment for paintings of oil. Emerald is Beryl's form (a silicate of aluminium, beryllium), which is of green color due to the incorporation of a bit of chrome in the network crytal Beryl instead of some of the ions of aluminium.

It was discovered by Vaughlin in 1797.

Information obtained of www.wikipedia.org and www.lennetech.es

MAGNESIUM

The magnesium is the chemical element of symbol Mg and atomic number 12.

The name comes from Magnesia, which in Greek was designating Tesalia's region (Greece). The Englishman Joseph Black recognized the magnesium as a chemical element in 1755. In 1808 Humphry Davy it obtained pure metal by means of electrolysis of a mixture of magnesia and HgO.

The magnesium is the most abundant eighth element in the bark of the Earth, though he is not in his elementary form. It is a question as an element of the group 2, which are called alkaline metals. It is an important element for the vegetable and animal life.

Information obtained of www.wikipedia.org

SELENIO

De Selene, la Luna.El selenio es un elemento químico de la tabla periódica cuyo símbolo es Se y su número atómico es 34 y peso atómico 78.96. Sus propiedades son semejantes a las del telurio.
En la genealogía divina tradicional, Helios, el sol, es su hermano: después de que éste termine su viaje a través del cielo, Selene comienza el suyo cuando la noche cae sobre la tierra. Su hermana Eos es la diosa de la aurora, quien también tuvo un amante humano, Céfalo,hija de los

titanes Hiperión y Tea.

Información extraída de: http://es.wikipedia.org/wiki/Selenio

TANTALIO

CARACTERÍSICAS GENERALES

Es un elemento químico cuyo símbolo es Ta, su número atómico 73, situado en el númeo 5 de la tabla periódicas. Se trata de un metal de transición raro, azul grisaceo duro y brilloso. Se emplea para la fabricación de elementos quirúrgicos e implantes.

MITOLOGÍA
De Tántalo (mitología). Hijo de Zeus y de Pluto. Estaba casado con Dione de lo que tuvo a Niobe, Broteas, Dáscilo y Pelote. Otra teoría es que es hijo de Tientes o de Broteas. Posteriormente fue matado por Agamenón, quién se casó con su viuda

Información obtenida de:

Diccionario de la mitología clásica.

http://es.wikipedia.org/wiki/Tantalio