Why is the gold nucleus treated as stationary during alpha scattering?
AIts charge is far smaller than alpha
BIt is bound tightly in a crystal
CIt is shielded by its electrons
DIt is about 50 times heavier than alpha
Answer & Solution
Correct answer: D. It is about 50 times heavier than alpha
Being roughly fifty times as massive as the alpha particle, the gold nucleus barely recoils.
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