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Why did Rutherford select a good foil in his a-rays scattering experiment?
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Why did Rutherford select a good foil in his a-rays scattering experim...
Gold is a heavy metal with high mass number. A light metal cannot be used because on being hit by fast moving a-particle, the atom of light metal will be simply pushed forward and no scattering can occur.
Moreover, gold is the best malleable metal. A very thin foil (=1000 atoms thick) can be made from gold to get the clear observations.
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Why did Rutherford select a good foil in his a-rays scattering experiment?
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