Physics · JEE | THERMODYNAMICS

In the Born-Haber cycle diagram for \( \text{NaCl} \) shown in Fig. 5.9, the step corresponding to the ionization of sodium atoms \( \text{Na}(g) \rightarrow \text{Na}^+(g) + e^{-}(g) \) represents:

1. A
   Bond dissociation energy absorption
2. B
   An exothermic process releasing energy equal to the electron gain enthalpy
3. C
   Lattice energy release
4. D
   An endothermic process requiring energy equal to the ionization enthalpy