Answer:
Most of the alpha particles passed through the gold foil without deflection, except for a small percentage.
Step-by-step explanation:
The Rutherford experiment throw some interesting results where the most particles passed the gold foil like they where in vacuum, but others particles dispersed with large angle even thought some of them bounce back.
Rutherfor explain tis behavior assuming that the positive charge in an atom its concentrate in a region called nucleus, where this nucleus its very small compared with the size of the atom.
The alpha particles used in the experiment where identified as a helium nucleus particles.