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Potassium fluoride (KF) has NaCl structu...

Potassium fluoride `(KF)` has `NaCl` structure . Its density is `2.48g cm^(-3)` and its molar mass is `58g mol^(-1)`. Compute the distance between `K^(+)` and `F^(-) ions in `KF`.

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To find the distance between the potassium ion \( K^+ \) and the fluoride ion \( F^- \) in potassium fluoride \( KF \), we can follow these steps: ### Step 1: Identify the structure and relevant parameters Potassium fluoride \( KF \) has a structure similar to sodium chloride \( NaCl \), which is a face-centered cubic (FCC) structure. In an FCC unit cell, the number of formula units \( Z \) is 4. ### Step 2: Use the formula for density The density \( \rho \) of a crystal can be expressed using the formula: \[ ...
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