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Most of the alpha particles passed through the foil:
AUnderneath
BUndeflected
CUndetected
DUndistorted
Answer & Solution
Correct answer: B. Undeflected
1. The first observation was the most common outcome.
2. Most of the alpha particles passed through the gold foil undeflected.
3. So the correct answer is undeflected.
_Source: syllabus Chemistry, Ch 2 'Structure of Atom'_
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