One dimensional ionic solids can be grown and stabilised inside confined spaces such as carbon nanotubes. Consider the hypothetical one-dimensional solid shown below which consists of alternating monovalent cations and anions with separation r between neighbouring ions. Given that the Coulombic energy of the interaction between two ions of opposite charge c=40rz+ze2 (where r is the distance between neighbouring cations and anions). Show that the total Coulombic interaction for a particular ion can be given by: c=r3.19741028J Hint: You will need to calculate the Madelug constant for this system, which will require the identity: k=12nk(1)k+1=ln2