1 ene 1897 año - J.J Thomson proposes the "raisin Bun Model" of the Atom

Descripción:

Thomson's model was the first to describe particles smaller than atoms. the model represented the atom as a positively charged sphere with negatively charged electrons spread throughout.
photo credit: https://weiblechemistry.wikispaces.com/file/view/dfjksadjflas.png/380018874/dfjksadjflas.png

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