Question

The radius of atom is of the order of 1 Å and radius of nucleus is of the order of fermi. How many magnitudes higher is the volume of atom as compared to the volume of nucleus ?

Answer 1

Here, `R_A ~= 1 Å = 10^(10)m, R_N ~= 1 fermi =10^(-15)m`
`:. (V_A)/(V_N) = ((4)/3)(piR_A^3)/((4)/(3)pi R_N^(3)) = ((R_A)/(R_N))^3= (10^(-10)/10^(-15)) = 10^(15)`.