One highly significant experiment increased scientists’ understanding of the structure of matter. In it, $\alpha$-particles were directed at a thin gold foil. What was observed?
- AAll the $\alpha$-particles were absorbed by the nuclei of the gold atoms.
- BAll the $\alpha$-particles were unaffected by the gold atoms.
- CSome of the $\alpha$-particles were attracted by the neutrons in the nuclei of the gold atoms.
- DSome of the $\alpha$-particles were repelled by the protons in the nuclei of the gold atoms.