-
J.J Thompson
Discovered that electrons must be a small piece of an atom by using a cathode ray tube -
Ernest Rutherford
Discovered the nucleus by conducting an experiment using gold foil -
Henry Moseley
Discovered that the nucleus is a collection of positively charged particles that increase in each heavier element -
James Chadwick
Discovered the neutron -
Enrico Fermi
Discovered that element could change by firing neutrons at the atoms and chipping off pieces -
Glenn Seaborg
Discovered element 94- Plutonium