When alpha-particles are sent through a thin metal foil, most of them go straight through the foil because, _______
A. alpha-particles are much smaller than electrons.
B. alpha-particles are positively charged
C. most part of the atom is empty space
D. alpha-particles move with a low velocity
Answer:C
When alpha-particles are sent through a thin metal foil, most of them go straight through the foil because, _______
A. alpha-particles are much smaller than electrons. B. alpha-particles are positively charged C. most part of the atom is empty space D. alpha-particles move with a low velocity