If the plum pudding model of the atom was correct, what should the results of Rutherford’s experiment be? Most of the positively charged particles should bounce back at a range of angles as they collide with the atoms in the foil; only a few should pass straight through the foil.

Most of the positively charged particles should pass straight through the foil because they move easily through the positively charged matter in the gold atoms.

Most of the positively charged particles should collide with the foil and stay there because they stick to the negatively charged gold atoms.