Final answer:
The bonding model for sodium metal involves metallic bonds, while the bonding model for sodium chloride involves ionic bonds.
Step-by-step explanation:
The bonding model for sodium metal differs from the bonding model for sodium chloride in that sodium metal forms metallic bonds, while sodium chloride forms ionic bonds.
In the case of sodium metal, the sodium atoms donate their valence electron to create a sea of delocalized electrons that are shared among all the metal atoms. This creates a lattice structure and results in the formation of metallic bonds.
On the other hand, in sodium chloride, sodium atoms donate their valence electron to chlorine atoms, resulting in the formation of sodium cations (Na+) and chloride anions (Cl-). These oppositely charged ions are held together by ionic bonds.