Physics · May / June 2024 · Paper 11 · Question 37

Alpha particles are directed at a thin gold foil. Only a very small proportion of the alpha particles are deflected through very large angles. Which fact about the nuclei of the gold atoms is not a conclusion of this experiment?

1. AThey are surrounded by mostly empty space.
2. BThey are very small.
3. CThey contain most of the mass of the atom.
4. DThey contain protons and neutrons.

As printed in the paper