Some chemistry experiment involving shooting atoms at gold tin foil..basically finding electrons. However, the question you should be asking in the world of chemistry is: Who is Alice Hoffman?
After Rutherford's discovery(Planetary Model), scientists started to realize that the atom is not ultimately a single particle, but is made up of far smaller subatomic particles. Following it...
Rutherford devised an experiment where alpha particles were fired at a very thin sheet of gold leaf. His detectors were at first place behind the foil and a large number of protons were detected as...
The simply answer, Ernest Rutherford (1871 - 1937) was awarded the Noel prize in 1908 for discovering that atoms can be broken apart by alpha particles, showing that the atomic mass is contained in...