what is the name of the scientist who discovered the electron? a. niels bohr b. john dalton c. j.j. thompson d. robert millikan
Rutherford and Bohr describe atomic structure1913. Photo: Niels Bohr's research notes for his new atomic theory. In 1911, Niels Bohr earned his PhD in Denmark with a dissertation on the electron theory of metals. Right afterwards, he went to England to study with J.J. Thomson, who had discovered the electron in 1897.
Bohr's model was the first to incorporate quantum theory, and hypothesized that since electrons can only have finite, discrete energy states, they only inhabit fixed distances from the nucleus. These distances were arranged into energy levels.