Chemistry · THERMODYNAMICS

For which of the following processes is the enthalpy of atomization exactly equal to the enthalpy of sublimation?

\( \text{H}_2(\text{g}) \rightarrow 2\text{H}(\text{g}) \)
\( \text{CH}_4(\text{g}) \rightarrow \text{C}(\text{g}) + 4\text{H}(\text{g}) \)
\( \text{Na}(\text{s}) \rightarrow \text{Na}(\text{g}) \)
\( \text{Cl}_2(\text{g}) \rightarrow 2\text{Cl}(\text{g}) \)

Correct answer · Option 3

\( \text{Na}(\text{s}) \rightarrow \text{Na}(\text{g}) \)

For solid metallic sodium, atomization involves conversion of \( \text{Na(s)} \) to \( \text{Na(g)} \), which is identical to sublimation.