Which of the following statements concerning lattice energy is false?
A)It is often defined as the energy released when an ionic solid forms from its ions.
B)MgO has a larger lattice energy than NaF.
C)The lattice energy for a solid with 2+ and 2- ions should be two times that for a solid with 1+ and 1- ions.
D)MgO has a larger lattice energy than LiF.
E)All of these are true.

Question

Quizplus · Accepted Answer

The statement that the lattice energy for a solid with 2+ and 2- ions should be two times that for a solid with 1+ and 1- ions is false. The lattice energy is actually proportional to the charge of the ions and inversely proportional to the distance between them, so the lattice energy for a solid with 2+ and 2- ions should be larger than that for a solid with 1+ and 1- ions, but not necessarily twice as large.

Which of the Following Statements Concerning Lattice Energy Is False