Question

Which of the following represents lattice energy?

None of the reactions

Na+(s) + I-(s) = NaI (s)

Mg2+(g) + 2F-(g) = MgF2(s)

LiBr(s) = Li+(s) + Br-(s)

NaCl(s) = Na+ (g) + Cl-(g)

Answer 1

he lattice energy is the energy required to break apart an ionic solid and convert its component atoms into gaseous ions. ... The other definition says that lattice energy is the reverse process, meaning it is the energy released when gaseous ions bind to form an ionic solid
Answer
Mg2+(g) + 2F-(g) = MgF2(s) AND

Answer 2

NaCl(s) = Na+ (g) + Cl-(g) , DEPENDING ON WHICH DEFINITION YOUR TEACHER USES.