Question

From the $\alpha$-particle scattering experiment, Rutherford concluded that:

• A. $\alpha$-particles can approach within a distance of the order of ${10}^{-14}m$ of the nucleus
• B. the radius of the nucleus is less than ${10}^{-14}m$
• C. scattering follows Coulomb's law
• D. the positively charged parts of the atom move with extremely high velocities

Answer 1

Answer: (A), (B), (C)

$\alpha$-particles can approach within a distance of the order of ${10}^{-14}m$ of the nucleus
the radius of the nucleus is less than ${10}^{-14}m$
scattering follows Coulomb's law

From the $\alpha$ scattering experiment,Rutherford concluded that:

$\left(1\right)$There is a positively charged centre in the atom called the nucleus.Nearby all the mass of an atom resides in the nucleus

$\left(2\right)$Electrons resolve around the nucleus in well defined orbitals.

$\left(3\right)$The size of nucleus is very small compared to that of an atom.

$\to$Scattering follows columb's law

$\to$Radius of nucleus is less than ${10}^{-14}m$

$\to$$\alpha$ particles can approach with an distance of the order of ${10}^{-14}m$ of the nucleus