MCQ
The $\alpha $-particle scattering experiment of Rutherford concluded that
  • A
    The nucleus is made up of protons and neutrons
  • B
    The number of electrons is exactly equal to number of protons in atom
  • The positive charge of the atom is concentrated in a very small space
  • D
    Electrons occupy discrete energy levels

Answer

Correct option: C.
The positive charge of the atom is concentrated in a very small space
c
The conclusion of Rutherford from his $\alpha$-particle scattering enperiment are:

$(i)$ Most of the space inside the atom is empty because most of the alpha-particles passed through the gold foil without getting deflected.

$(ii)$ very few particles were deflected from thein path, indicating that the positive charge of the atom occupies very little space.

$(iii)$ A very small fraction of alpha-particles were deflected by $180^{\circ}$.

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