Question

The metallic lustre exhibited by sodium is explained by the presence of:

• A. free protons
• B. $N{a}^{+}ions$
• C. conduction electrons
• D. a body centred cubic lattice

Answer 1

The correct option is C conduction electrons

The valence electron of each sodium atom in the crystal lattice is free to move. It is present in the conduction band and can move from one end to other ends of the metal and thus it conducts electricity.

Hence, the correct option is $\text{C}$