Answer: Option (b) is the correct answer.
Step-by-step explanation:
A bond formed due to the transfer of electrons from one atom to another then the bond formed is known as ionic bond. Whereas a bond formed by sharing of electrons between two atoms is known as covalent bond.
When a non-metal combines with a metal then it results in the formation of an ionic bond.
For example, NaCl is an ionic compound as sodium atom donates an electron to chlorine atom.
In solid state, molecules of Na and Cl are arranged in an orderly manner as anions are placed as face centered cubic array with cations penetrating with this fcc lattice.
Thus, we can conclude that in a sample of sodium chloride (NaCl), the sodium and chloride ions are arranged into an orderly array of ions.