If nucleus and atom are considered as perfect spheres with the diameters m and m, respectively, then — Atomic Structure Chemistry Question

💡 Solution & Explanation

The volume of a sphere is $V \propto d^3$. The ratio of volumes is $\frac{V_{nucleus}}{V_{atom}} = \left(\frac{d_{nucleus}}{d_{atom}}\right)^3 = \left(\frac{4 \times 10^{-15}}{2 \times 10^{-10}}\right)^3 = (2 \times 10^{-5})^3 = 8 \times 10^{-15}$. Therefore, correct answer is B.