In the Born-Haber calculation of the lattice enthalpy of $LiF$ from its elements, which process is exothermic?

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dissociation energy of $F_{2} (g)$

sublimation energy of $Li (s)$

electron gain enthalpy of $F (g)$

ionization energy of $Li (g)$

answer is B.

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Detailed Solution

Electron gain enthalpy:

Electron gain enthalpy is defined as the amount of energy released when an electron is added to an isolated gaseous atom. During the addition of an electron, energy can either be released or absorbed

In the Born-Haber calculation of the lattice enthalpy of $LiF$ from its elements, electron gain enthalpy of $F (g)$ process is exothermic?

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