Question

For a solid with the structure shown in figure, the coordination numbers of the points $A$ and $B$ respectively are

• A. $6,8$
• B. $8,8$
• C. $6,6$
• D. $4,6$

Answer 1

The correct option is C $6,6$

Since 'A' represent FCC ,it has $CN$ of six and since 'B' is present at all octanedral solid as of $N{a}^{+}$ in $NaCl$ structure , it has also $CN$ of six .so,$6,6$ is correct answer