In Rutherford’s experiment, generally a thin foil of heavy atoms like gold, platinum, etc., have been used to be bombarded by the $α$ -particles and following results were observed.
If the thin foil of light atoms like aluminium, etc., is used, what difference would be observed from the above results?

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All the $α$ - particles pass through without much effect

The number of $α$ - particles deflected back becomes half

The number of $α$ - particles deflected increases

The results are same in both the cases.

answer is C.

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Detailed Solution

If we use the light atoms like aluminium metal foil instead of gold foil then $α$ -particles show more deflection. This is due to less malleability of aluminium than gold.

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