THE PRACTICE STUDIO

Go slowly. Ask why. Make it yours.

PRACTICE · MEMBERSIntermediate · Single correct

PRACTICE / Nuclear size

Size grows more slowly than nucleon count

In the model R = r₀A^(1/3), compare nuclei with mass numbers 216 and 27.

Find R216/R27.

Organize the givens & assumptions
  • A₁ = 216
  • A₂ = 27
  • same r₀

Spherical nuclear-size model R = r₀A^(1/3), with the same r₀ for both nuclei; ignore shell and surface corrections.

  1. A88
  2. B8\sqrt8
  3. C1/21/2
  4. D22

Try it on paper first. Free sample problems in every collection include the complete reasoning: find one in this collection →