Which of the following statements concerning lattice enthalpies is not true?

W) Increasing ion size will produce a larger lattice enthalpy

X) Cations and anions that are more highly charged will produce larger lattice enthalpies

Y) Lattice enthalpy correlates with the percentage ionic character of a compound

Z) Lattice enthalpies can be calculated by summing up electrostatic interactions between all pairs of ions
W) Increasing ION SIZE WILL PRODUCE A LARGER LATTICE ENTHALPY