Question

The number of NaCl units present in a unit cell of NaCl is:

• A. $1$
• B. $2$
• C. $4$
• D. $8$

Answer 1

The correct option is C $4$

The number of NaCl units present in a unit cell of NaCl is $4$. NaCl crystallizes in fcc structure. A fcc structure contains $4$ atoms/ions/molecules per unit cell.