Suppose you are given a chance to repeat...

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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The basic purpose of scaftering experiment is defeated because solid hydrogen will be much lighter target compared to the alpha particle acting as projectile. According to theory of elastic the collisions, the target hydrogen will move much faster compared to alpha after' collision. We cannot determine the size of hydrogen nucleus.

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