[Oxide ions have a cubic c...] In Na2O having antifluorite structure

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In Na₂O having antifluorite structure

Oxide ions have a cubic close packed arrangement and Na⁺ occupy all the eight tetrahedral voids.

Oxide ions have a cubic close packed arrangement and Na⁺ occupy all the octahedral voids

Na⁺ ions have a cubic close arrangement and O^2- occupy all the octahedral voids

Na⁺ ions have a cubic close arrangement and O^2– occupy all the tetrahedral voids.

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