Answer:
Option C
Explanation:
As we knows, radius of an atom,
$\gamma_{A}\approx 10^{-10}m$
radius of nucleus, $\gamma_{B}\approx 10^{-15}m$
So, ratio of their volumes
$\frac{V_{A}}{V_{N}}=\frac{\frac{4}{3}\pi r^{3}_{A}}{\frac{4}{3}\pi r^{3}_{N}}=\left(\frac{r_{A}}{I_{N}}\right)^{3}=\left(\frac{10^{-10}}{10^{-15}}\right)^{3}$
$V_{A}:V_{N}=10^{15}:1$
