SAT Subject Physics Practice Question 415: Answer and Explanation
6. Rutherford's results in his famous gold foil experiment proved that atoms
A. are mostly space.
B. are in continuous motion.
C. have negative orbitals.
D. have diffuse charge distribution.
E. have dense crystalline structure.
Correct Answer: A
The correct answer is (A). Most of the alpha particles passed through the gold foil, leading Rutherford to conclude that atoms were composed mostly of space with a dense core.