# Q. 4.     What do you think would be the observation if the  $\alpha$-particle scattering experiment is carried out using a foil of a metal other than gold?

If a foil of a heavy metal like platinum is used, then the observations in the alpha-particle scattering experiment would be the same as that in the gold foil experiment.

If a foil of a light metal like lithium is used, then the observations in the alpha-particle scattering experiment would not be the same because these metal are not so malleable so the thin foil is difficult to obtain.

The problem with not using thin foil is that the number of the alpha particle will bounce back from the thick foil and location of positive mass would be difficult to find.

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