In a face centred cubic lattice, atoms of A form the corner points and atoms of
Question:

In a face centred cubic lattice, atoms of A  form the corner points and atoms of B form

the face centred points. If two atoms of A are missing from the corner points, the formula

of the ionic compound is

1. $\mathrm{AB}_{2}$

2. $\mathrm{AB}_{3}$

3. $\mathrm{AB}_{4}$

4. $A_{2} B_{5}$

Correct Option: , 3

Solution: