In Rutherford's experiment, most of the alpha particles go straight through the foil because
alpha particles are positively charged
alpha particles are much heavier than electrons
alpha particles move with high velocity
most part of the atom is empty
A
alpha particles are much heavier than electrons
B
alpha particles move with high velocity
C
most part of the atom is empty
D
alpha particles are positively charged
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Solution
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The observation that most alpha particles passed straight through the gold foil led Rutherford to conclude that the positive charge in an atom is concentrated in a very small area that is called nucleus. Atoms have mostly empty space. Electrons, which are negatively charged, are distributed throughout this space but take up a very small part of it.
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