Write the electron-dot structure for sodium and chlorine atoms.
How do these form a chemical bond? Name the type of bond so formed.
Why does a compound have a high melting point? [3 MARKS]
Each part: 1 Mark
Electron dot structure :
An ionic bond is formed by the transfer of an electron from the sodium atom to the chlorine atom.
Sodium chloride exists as a crystalline solid in which the Na+ and Cl− ions are closely packed in space. Since the attractive forces among the ions are quite large, the compound has a very high melting point.