Here's a breakdown:
* The Experiment: Rutherford's famous "gold foil experiment" involved firing alpha particles (positively charged particles) at a thin sheet of gold foil.
* The Expected Result: Based on the prevailing "plum pudding" model of the atom, where positive charge was thought to be evenly distributed throughout the atom, the alpha particles were expected to pass straight through the foil with minimal deflection.
* The Actual Result: Much to their surprise, a small percentage of alpha particles were deflected at large angles, and some even bounced back towards the source.
* The Interpretation: Rutherford concluded that the atom must have a small, dense, positively charged center called the nucleus. This nucleus is responsible for deflecting the alpha particles, while the rest of the atom is mostly empty space.
This experiment revolutionized our understanding of the atom and laid the foundation for the development of modern atomic theory.
