Physics for IGCSE & O level - Atoms And Radioactivity (Section 3 - No. 50)
Which of the following is a key observation from Rutherford's gold foil experiment?
Most alpha particles were deflected.
All alpha particles were deflected.
Most alpha particles passed straight through the gold foil.
Alpha particles never passed through the foil.
Explanation
Most alpha particles passed straight through the gold foil, indicating the atom is mostly empty space.
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