Chemistry - Solid State Question with Solution | TestHub

Each$\mathrm{C}{\mathrm{a}}^{2+}$ion is surrounded by 8${\mathrm{F}}^{-}$ions and each${\mathrm{F}}^{-}$ion by 4$\mathrm{C}{\mathrm{a}}^{2+}$ions. Thus, coordination number of$\mathrm{C}{\mathrm{a}}^{2+}$is 8 and${\mathrm{F}}^{-}$is 4.