The chemical nature of an atom depends on its .......

The size of an atom is of the order of:

Which scientist proposed the plum pudding model of the atom?

Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below $14\; K$.) What results do you expect?

Particles used in the Rutherford's scattering experiment to deduce the structure of atoms:

In the Rutherford scattering experiment,what will be the correct scattering angle $\theta$ for an $\alpha$-particle with an impact parameter $b = 0$ (in $^o$)?