Ionization enthalpy of sodium = 492 kJ/mole;

Electron gain enthalpy of chlorine = -349 kJ/mole;

Sublimation enthalpy of sodium = +108 kJ/mole ;

Bond dissociation enthalpy of chlorine = +243 kJ/mole ;

Change in enthalpy for the process, $\mathrm{Na}\left(\mathrm{s}\right)+\frac{1}{2}{\mathrm{Cl}}_2\left(\mathrm{g}\right)\to {\mathrm{Na}}^{+}\left(\mathrm{g}\right)+{\mathrm{Cl}}^{-}\left(\mathrm{g}\right)$ will  be

• A

  +475 kJ

• B

  +372.5 kJ

• C

  +143 kJ

• D

  +324 kJ