The Born-Haber cycle is a series of steps that represent the formation of an ion

Question

The Born-Haber cycle is a series of steps that represent the formation of an ionic compound from a metal and a nonmetal. For example, the steps in a Born-Haber cycle for the formation of NaCl(s) consist of sublimation of the metal Na atom (?Hsubl-Na) to form a gaseous Na atom, bond dissociation of the chlorine molecule (BECl2) to form a gaseous Cl atom, ionization energy of the sodium atom (IENa) to form a gaseous Na+ ion, electron affinity of the chlorine atom (EACl) to form a gaseous Cl- ion, and the lattice energy of NaCl (LENaCl) involving the coalescing of the gaseous Na+ and Cl- ions to form a solid NaCl formula unit.

With the above summary in mind, which particular steps of the Born-Haber cycle would be represented in the following reaction?

K(s) + F(g) -> KF(s)

IEK and EAF

?Hsubl-K and LEKF

IEK and EAF

?Hsubl-K and LEKF

Explanation / Answer

The answer is D

sublimation of the metal K atom (?Hsubl-Na) to form a gaseous K atom.ionization energy of the sodium atom (IEK) to form a gaseous K+ ion, electron affinity of the chlorine atom (EAF) to form a gaseous F- ion, and the lattice energy of KF (LEKF) involving the coalescing of the gaseous K+ and F- ions to form a solid KF formula unit.

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