Albert Einstein was a German physicist who was pivotal in many scientific discoveries in his life. He contributed to the field of chemistry through his work on the photoelectric effect and mathematics of the atom.
The work of J.J Thomson’s student, Ernest Rutherford, led to the discovery of the Proton. Working with alpha particles fired at a piece of gold foil it was observed that instead of passing straight through it was scattered. Suggesting there was something large in the centre of the atom.