d) Radius/density

f) radius of nuclei; R = r0A^(1/3) where r0 is a constant and A is the nucleon number

g) mean densities of atoms and nuclei


R = r0A^(1/3)

  • radius of a nucleus (m) = radius of a proton (m) x nucleon number ^ (1/3)

r0 = 1.2


mean density of a nucleus = 10^17kgm^-3

  • due to

    • a very small volume

    • and a very large relative mass