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Q.

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

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a

dissociation energy of F2 (g)

b

electron gain enthalpy of F(g)

c

ionization energy of Li(g)

d

sublimation energy of Li(s)

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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