Select from the data given, a reaction Value representing each of the energy changes. heat of formation, atomization energy, sublimation energy

Here are the $\Delta H$ values representing each of the given energy changes:

• Heat of formation This is the enthalpy change when one mole of a compound is formed from its constituent elements in their standard states. The reaction is: $\text{Na}_{(\text{s})} + \frac{1}{2}\text{Cl}_{2(\text{g})} \rightarrow \text{NaCl}_{(\text{s})}$ The $\Delta H$ value is $\boxed{\text{-410}}$.

• Atomization energy This is the enthalpy change required to produce one mole of gaseous atoms from an element in its standard state. The reaction for the atomization of chlorine is: $\frac{1}{2}\text{Cl}_{2(\text{g})} \rightarrow \text{Cl}_{(\text{g})}$ The $\Delta H$ value is $\boxed{\text{+121}}$.

• Sublimation energy This is the enthalpy change required to convert one mole of a solid directly into a gas. The reaction for the sublimation of sodium is: $\text{Na}_{(\text{s})} \rightarrow \text{Na}_{(\text{g})}$ The $\Delta H$ value is $\boxed{\text{+108}}$.