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Chemistry · PYQ NEET UG 2016(2)
हिन्दीIn calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion \( (\mathrm{Ca}^{2+}) \) and fluoride ion \( (\mathrm{F}^-) \) are ______ respectively.
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Correct answer · Option D
8 and 4
Explanation
In fluorite structure \( (\mathrm{CaF}_2) \), \( \mathrm{Ca}^{2+} \) ions are coordinated by 8 \( \mathrm{F}^- \) ions, and each \( \mathrm{F}^- \) ion is coordinated by 4 \( \mathrm{Ca}^{2+} \) ions.
