The ionic radii of selected cations are Li⁺ 76 pm, Na⁺ 102 pm, and K⁺ 138 pm. All three form chlorides with Cl⁻ (181 pm). Which ranking correctly orders the lattice energies of LiCl, NaCl, and KCl from greatest (most negative) to least (least negative)?
a) KCl>NaCl>LiCl
b) LiCl>NaCl>KCl
c) NaCl>LiCl>KCl
d) LiCl>KCl>NaCl