MCQ
$\mathrm{Na}_2 \mathrm{O}$ has:
- A$\text{NaCl}$ structure
- B$\text{ZnS}$ structure
- CFluorite structure
- ✓Antifluorite structure
✓
Answer
Correct option: D.
Antifluorite structure
$\mathrm{Na}_2 \mathrm{O}$ structure is antifluorite type structure in which $\mathrm{O}^{2-}$ ions forms $\text{ccp}\ ($cubic close packing$)$ and $\mathrm{Na}^{+}$ occupy all tetrahedral voids.
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