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The density of a particular crystal of L...

The density of a particular crystal of LiF is `2.65g//"cc"`. X-analyses shows that `Li^(+)` and `F^(-)` ions are arranged in a cubic array at a spacing of `2.01Å`. From this data, apparent Avogadro's constant is `x xx10^(23)`. Calculate the value of x (Given atomic mass of Li = 6.939, F = 18.998)

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