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LA FISICA DEL ATOMO

JUNE 1935   -  Volume: 10 -  Pages: 214-216

DOI:

[No data]

Authors:

FEDERICO DE CASTRO

Disciplines:

  • Nuclear physics (OTRAS (ESPECIFICAR) )

Downloads:   333

How to cite this paper:  
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Received Date :   1 June 1935


Key words:
[No data]
Article type:
ARTICULO DE INVESTIGACION / RESEARCH ARTICLE
Section:
VARIOUS

Para explicar la constitución de la materia empleaban los primeros físicos los llamados elementos: fuego, agua, tierra y aire. Hoy sabemos que ninguno de los cuatro es un elemento. Siguieron las teorías molecular y atómica y, en 1897, con el descubrimiento del electrón se llega a considerar los átomos con estructura eléctrica en la cual jugaba un papel principal el electrón. Se confirma más tarde que el átomo estaba constituido por cargas positivas de electricidad llamadas protones, asociadas a cargas negativas, electrones, que constituían la masa del átomo y su núcleo, alrededor del cual, circulando en órbitas diversas y definidas, se encuentran los electrones externos, en número igual al exceso de protones sobre electrones del núcleo, número que es el que corresponde al de orden, o número atómico, de la tabla de Mendelejeff.

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