According to Rutherford's model, what is the approximate ratio of the radius of the electron's orbit

Question

According to Rutherford's model, what is the approximate ratio of the radius of the electron's orbit to the radius of the nucleus?

Professor PC Thomas Classes · Answer

From the text, the atomic radius is about $10^{-10}$ m and the nuclear radius is about $10^{-15}$ m. The ratio is $10^{-10} / 10^{-15} = 10^5$.