Answer to Question #112844 in Physics for Shah rukh

Question

How much of you is not vacuum? Outside of the nucleus, an atom contains mostly empty space. Estimate the fraction of the volume of an atom that is occupied by the nucleus. Assume that a typical atom has a linear dimension of about 0.1 nm and that a typical nuclear dimension is about 1 fm.

Answer 1

$$\frac{V_n}{V_a}=\frac{a_n^3}{a_a^3}$$

$$\frac{V_n}{V_a}=\frac{(10^{-15})^3}{(0.1\cdot 10^{-9})^3}=10^{-15}$$