The first model of an atom was given by

Enlist the conclusions drawn by Rutherford from his $\alpha -$ ray scattering experiment.

Atomic models have been improved over the years. Arrange the following atomic models in their chronological order:
$(i)$ Rutherford's atomic model
$(ii)$ Thomson's atomic model
$(iii)$ Bohr's atomic model

$(a)$ Why did Rutherford choose gold and not any other lighter element (such as aluminium) for his experiment? Explain your answer giving two reasons.
$(b)$ Write the name and symbol of the particle chosen by Rutherford for bombardment against the gold foil in his experiment.

Rutherford's alpha $(\alpha)$ particles scattering experiment resulted in the discovery of:

Give the salient features of Rutherford's nuclear model of the atom.