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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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A sample of AlF3\mathrm{Al}{\mathrm{F}_3} contains 3.0×10243.0 \times {10^{24}} F ions. The number of formula units of this sample are
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Correct option: D
1.0×10241.0 \times {10^{24}}
Option D (1.0×10241.0 \times {10^{24}}) is correct because each formula unit of AlF3\mathrm{Al}{\mathrm{F}_3} contains 3 fluoride ions, so the number of formula units is one-third the number of fluoride ions.

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