The co-ordination number of ${\rm{C}}{{\rm{a}}^{2 + }}$ ion in fluorite crystal is :

JEE CHEMISTRY MCQ: SOLID STATE

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The co-ordination number of

\mathrm{C}{\mathrm{a}^{2 + }}

ion in fluorite crystal is :

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Correct option: B

Option B (8) is correct because in the fluorite structure (CaF₂), each Ca²⁺ ion is surrounded by 8 F⁻ ions, giving it a coordination number of 8.

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{CaF}_2

{F}^{-}

\mathrm{d}_{\mathrm{e}}

\mathrm{d}_{\mathrm{fd}}, \mathrm{d}_{\mathrm{bd}}

\mathrm{AB}_2

\mathrm{A}