In which model is it completely wrong to ignore multiple scattering fo

1.	In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α-particles by a thin foil?
Answer» On the basis of Thomson’s atom model, the scattering angle of α-particles due to single collision will be very small. It is because, mass of atom is distributed all over it. The observed average scattering angle can be explained only by considering multiple scattering. Therefore, it is wrong to ignore multiple scattering in Thomson’ atom model. Since the mass of the atom is concentrated in the form of nucleus in Rutherford’s atom model, most of the scattering comes through a single collision and multiple scattering can be ignored.

In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α-particles by a thin foil?

Answer»

On the basis of Thomson’s atom model, the scattering angle of α-particles due to single collision will be very small. It is because, mass of atom is distributed all over it. The observed average scattering angle can be explained only by considering multiple scattering. Therefore, it is wrong to ignore multiple scattering in Thomson’ atom model.

Since the mass of the atom is concentrated in the form of nucleus in Rutherford’s atom model, most of the scattering comes through a single collision and multiple scattering can be ignored.

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