Most alpha particles in the gold foil experiment:
Apassed straight through the foil undeflected
Bwere sharply deflected back
Cwere absorbed by the foil
Dwere converted to electrons
Answer & Solution
Correct answer: A. passed straight through the foil undeflected
Most alpha particles passed straight through undeflected — leading Rutherford to conclude most of the atom is **empty space**.
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