Electron Isotope Subatomic particle

Beside above, what was JJ Thomson atomic theory? Summary. J.J. Thomsons experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson proposed the plum pudding model of the atom, which had negatively-charged electrons embedded within a positively-charged soup.

Subsequently, one may also ask, when did JJ Thomson discovered the electron?

1897

Who is the father of JJ Thomson?

Joseph James Thomson