Rutherford's Experiment, in Which He Fired Alpha Particles of 7

question 27

Multiple Choice

Rutherford's experiment, in which he fired alpha particles of 7.7 MeV kinetic energy at a thin gold foil, showed that nuclei were very much smaller than the size of an atom because:

• A)some alpha particles passed through the foil undeflected.
• B)some alpha particles were deflected backwards.
• C)some alpha particles were captured by the gold nuclei.
• D)the alpha particles could not get closer than 10-10 m to the gold nuclei.
• E)the alpha particles split into deuterium nuclei when they encountered the gold nuclei.

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