Question

When a particles are sent through a thin metal foil, most of them go straight through the
foil because:
A) a particles are much heavier than electrons.
B) a-particles are positively charged.
C) Most part of the atom is empty.
D) a particles move with high speed​

Answer 1

Due to high momentum and empty space in atom most of a-particles go straight through the foil

SO ( A ) AND ( C ) ARE CORRECT

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