In Rutherford's experiment, generally the thin foil of heavy atoms, such as gold, platinum, etc. have been used to be bombarded by the `alpha`-particles. If the thin foil of light atoms such as aluminium etc. is used, what difference would be observed form the above results?

Explanation

We have studied that in the Rutherford 's experiment by using heavy metals like gold and platinum, a large number of `alpha` - particles sufferred deflection while a very few had to retrace their path . If a thin foil of lighter atoms like aluminium etc. be used in the Rutherford experiment, this means that the obstruction offered to the path of the fast moving `alpha`-particles will be comparatively quite less. As a result,the number of `alpha`- particles will be quite less and the particles which are deflected back will be negligible.