Match Column I with Column II and Column III — Solid State Chemistry Question

💡 Solution & Explanation

NaCl (rock salt) has Cl$^-$ in FCC and Na$^+$ in all octahedral voids with 6:6 coordination. CaF$_2$ (fluorite) has Ca$^{2+}$ in FCC and F$^-$ in all tetrahedral voids with 8:4 coordination. ZnS (zinc blende) has S$^{2-}$ in FCC and Zn$^{2+}$ in alternate tetrahedral voids with 4:4 coordination. Na$_2$O (anti-fluorite) has O$^{2-}$ in FCC and Na$^+$ in all tetrahedral voids with 4:8 coordination. Therefore, correct pairs are A $\rightarrow$ Q, W; B $\rightarrow$ P, X; C $\rightarrow$ R, Z; D $\rightarrow$ S, Y.