Suppose you are given a chance to repeat the alpha-particle scatt… - Vidyadip

Question

Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. $($Hydrogen is a solid at temperatures below $14 K.)$ What results do you expect?

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Answer

In the alpha$-$particle scattering experiment, if a thin sheet of solid hydrogen is used in place of a gold foil, then the scattering angle would not be large enough. This is because the mass of hvdroqen $(1.67 \times 10^{-27} \ kg)$ is less than the mass of incident $a-$parttcles $(6.64 \times 10^{-27} \ kg).$
Thus, the mass of the scattering particle is more than the target nucleus $($hydrogen$).$ As a result, the $Cl$ particles would not bounce back if solid hydrogen is used in the $a-$particle scattering experiment.

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