A very important experiment improved scientists’ understanding of the structure of matter.
The experiment involved α-particles being fired at a thin, gold foil.
What happened?
1 )
All the α-particles were absorbed by the nuclei of the gold atoms.
2 )
All the α-particles were unaffected by the gold atoms.
3 )
Some of the α-particles were attracted by the neutrons in the nuclei of the gold atoms.
Some of the α-particles were repelled by the protons in the nuclei of the gold atoms.
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