Answer
J.J. Thomson: performed a CRT experiment and determined that the ray was composed of negative particles and named these electrons. He determined the mass-charge ratio for an electron and coined the "plum pudding" model of the atom
R.A. Millikan: He performed an "oil-drop" experiment and determined the charge of one electron and using the known mass-charge ratio, he calculated the mass of one electron to be (9.11x10^-28g).
Ernest Rutherford: He performed the gold foil experiment and determined that atoms contained a small, positively charged core at the center (nucleus core). He then came up with the nuclear model of the atom (electrons orbiting around the nucleus)
James Chadwick: James discovered the neutron in atoms and was awarded the 1935 Nobel Prize in Physics. Following this discovery he wrote the MAUD Report motivating the US to research the atomic bomb further.
Work Step by Step
J.J. Thomson: performed a CRT experiment and determined that the ray was composed of negative particles and named these electrons. He determined the mass-charge ratio for an electron and coined the "plum pudding" model of the atom
R.A. Millikan: He performed an "oil-drop" experiment and determined the charge of one electron and using the known mass-charge ratio, he calculated the mass of one electron to be (9.11x10^-28g).
Ernest Rutherford: He performed the gold foil experiment and determined that atoms contained a small, positively charged core at the center (nucleus core). He then came up with the nuclear model of the atom (electrons orbiting around the nucleus)
James Chadwick: James discovered the neutron in atoms and was awarded the 1935 Nobel Prize in Physics. Following this discovery he wrote the MAUD Report motivating the US to research the atomic bomb further.
