The Total solution for NCERT class 6-12
Suppose you are given a chance torepeat the alpha-particle scattering experiment using a thin sheet of solidhydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below14 K.) What results do you expect?.
In the alpha-particle scatteringexperiment, 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 massof hydrogen (1.67 ├Ч 10тИТ27┬аkg) isless than the mass of incident ╬▒тИТparticles (6.64 ├Ч 10тИТ27┬аkg).Thus, the mass of the scattering particle is more than the target nucleus(hydrogen). As a result, the ╬▒тИТparticles would not bounce back if solidhydrogen is used in the ╬▒-particle scattering experiment.