1.

What observations in scattering experiment ledRutherford to make the following conclusions?(i) The most of the space in an atom is empty.(ii) The whole of the mass of the atom is present in1.the centre of the nucleus.(iii) Nucleus has positive charge.On the basis of scattering of a-particles by a thinmetal foil, describe the Rutherford model of anatom. What are the drawbacks of this model?

Answer»

(i)Most of the alpha particles passed through the gold foil without getting deflected.

(ii)Very few particles were deflected from their path by 180o indicating that the whole mass of the atom is present in its centre in a very small volume.

(iii)Few particles were deflected at small angles from their path and very few were deflected from their path by 180o indicating that the positive charge of the atom occupies very little space and is located at the centre.



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