Describe 3 experiments, run prior to 1930, and the types of energies/particles used to probe the structure of the atom. What did each experiment investigate? Include the names of the scientists associated with each experiment in your answer.

2 answers

The only way I can answer this question is to write your paper for you and I don't want to do that. I suggest you Google and find the material. I think you can find all you want from three Googles; i.e., "discovery of electrons", "discovery of protons" and "discovery of neutrons". I tried those and everything seems to be there. In particular you will want to look at the cathode ray tube experiments, the gold foil experiments by Rutherford, James Chadwick's discovery of the neutron about 1932.
Would this be suffice:

Prior to 1930, radioactivity was discovered with three different types: alpha, beta, and gamma particles. With alpha particles, Rutherford and Chadwick were able to discover two parts of the atom: the nucleus and neutron, respectively. Rutherford did the gold foil experiment, with Chadwick doing a similar one. Thomson founded the electron with the cathode ray tube, powered by a high electrical voltage.